Goat Rock Beach
Encyclopedia
Goat Rock Beach is a sand beach
in northwestern Sonoma County, California
, United States
.
This landform is a sub-unit of Sonoma Coast State Beach
, owned and managed by the State of California
. At the northern terminus of Goat Rock Beach is the mouth
of the Russian River
and the southern end of this crescent shaped expanse is the massive Goat Rock, an iconic
outcrop
of the Sonoma Coast, which is barely attached to the mainland
by a narrow isthmus
.
Goat Rock Beach is frequented by beachcombing visitors, but usually not in high numbers except in mid-summer; there is some wading and surfing activity, although these uses are moderated by the rip current
generated by a steep gradient into the water that leads to an underwater trench parallel to the waterline. The beach is also a regular resting ground for seagulls, sea otter
s, elephant seal
s, harbor seal
s, and sea lion
s, the latter three species
often hauling out of the Pacific Ocean
. The state of California recommends that a 50 yards (45.7 m) distance be preserved between human visitors and the seasonal marine mammals, especially in the pupping
season.
both in flow rate and lineal extent. Immediately beyond the Russian River discharge to the Pacific Ocean
is the coastal town of Jenner
. North of the mouth of the Russian River is Jenner Beach. Goat Rock protrudes into the Pacific at the south end of Goat Rock Beach. Visitors can access the base of Goat Rock via a low lying isthmus
of land which has been appropriated by the State as a parking area. The almost sheer cliff
s of Goat Rock are virtually impossible to scale or to circumnavigate; in fact, signage is posted prohibiting either activity. There is considerable sloughing of broken rock from these vertical surfaces of Goat Rock. Blind Beach is situated immediately south of Goat Rock Beach, the two beach
es being separated by Goat Rock itself.
Along Goat Rock Beach and the adjoining beaches, massive rock outcrop
pings are found both on the shore and protruding from the Pacific Ocean as small skerries
. Among these rugged structures are natural arch
es formed by powerful wave action selectively eroding weaker strata of the rock formations. Approximately seventeen miles to the south is another major geological feature of the Northern California
coast
known as Bodega Head
. Goat Beach lies below and slightly west of State Route 1
.
During the summer months a sandbar is built up along the beach and separates the Russian river from the Pacific Ocean. This sandbar is breached whenever the water levels reach heights between 4.5 and 7 feet at the Jenner visitor center. Breaching of the sandbar during late fall / early winter splits the beach in two sections. The northern section is protected by the Russian river flowing into the ocean and creates an ideal location for harbor seal pupping.
as well as windborne erosion, thus creating a situation where an average of one to three feet per year of land mass is lost, except for the hardest of outcrop formations . In winters of heavy storms this value can be yet higher. Over the last geologic
epoch the land has been subject to uplift, a process combined with marine erosion, which has created a marine terrace
above the entire extent of the beach. This marine terrace elevation varies approximately 30 to 150 feet (10 to 50 meters) above mean sea level, which results in a steep bluff
directly above the littoral
zone, and a succession of terrace levels.
The sea stacks along the coast at Goat Rock Beach consist of rocks from the Franciscan
Complex, formed within an era of plate collision along the western coast of North America. From about 200 to 30 million years ago, the North American Plate
was in continual collision with the Farallon Plate
. A variety of rock types resulted from this collision, including pillow basalt
, chert
, and marine sandstone
. During the plate collisions, these rocks were considerably faulted and crushed into melange, which is a mixture of ground-up matrix and resistant pockets of rock floating within. When melange is eroded by wave action, the softer part of the matrix is washed away, leaving the more resistant blocks exposed in the ocean as sea stacks. Goat Rock is such a flat topped sea stack comprised by a block of resistant greywacke
.
Vertical sea stack formations, a geological hallmark of this shoreline, appear standing out of the water or on the beach
resembling sculptures. Occasionally these stacks appear on the marine terrace, indicating their ancient genesis on the sea floor prior to uplift. These rock formations are characteristically composed of sandstone
with layers of quartz
.
The active San Andreas Fault
runs roughly parallel and near to the coastline of Goat Rock Beach. Soil
s within the site are classified as coastal beach sands (where rocky shore
line is not evident) and escarpment
group soils on the marine terrace; typically soils above the marine terrace are in the Rohnerville loam group. Most of the beach sands consist of a medium coarse brown to gray sand
y materials, reflecting the high rate of erosion of escarpment
soils into the ocean; however, there are patches of dark gray smooth pebble
beach such as the approximately one hundred meter stretch lying immediately north of Goat Rock.The beach is changed every year.
The oldest natural history
of this area related to mammal
s manifests in a series of rock outcrop
s about one third of a mile south of Goat Rock Beach, positioned above the shoreline on a low lying marine terrace
. There are uplifted sea stack formations with prominent rubbing marks about two to four meters in elevation above the ground surface, a height too high to have been caused by modern bovids. Mammoth
s are believed to have roamed here as recently as 40,000 years ago, and they are thought to have created these severe rubbing marks. Mammoth fossil remains have been found at Bodega Head
at the south end of Sonoma Coast State Beach.
The earliest known human settlement of this site was by the Native American
Coast Miwok
and Pomo tribes. As early as 1849 archaeological discoveries were recorded in the vicinity, and to date several prehistoric kitchen midden
s and other types of tribal habitation finds have been made. Goat Rock Beach is part of the Mexican land grant
rancho Bodega
. The Russians
are thought to have begun logging the old-growth forests directly above the coastal prairie in the early 19th century.
The underwater delineation of the property is considered to extend to 1000 feet from the shore
line. While no shipwreck
s have been discovered, the literature indicates that there are at least 17 vessels which may have been lost in these waters. There are remains of numerous historic barns and other agricultural buildings on the coastal prairie several miles south of Goat Rock Beach, indicating 19th century settlement by Europe
ans; to the south, at Duncans Landing there are iron pins embedded in the sandstone bluffs as evidence of an active shipping industry here in the late 19th and early 20th century.
In the era circa 1920, a sizeable quarry
ing was conducted at Goat Rock, which activity produced the apparent separation of Goat Rock from the mainland. Quarry products were transported to the mouth of the Russian River via a now abandoned rail line; some of these materials were used to attempt the construction of a jetty
in the mouth area, but that project was eventually terminated.
s present at Goat Rock Beach, including marine, littoral zone and coastal prairie
. The marine environment presents gray whale
s, harbor seal
s and California sea lion
s as well as a multitude of fish species
and other marine organism
s; in fact, several species of anadromous fish enter the Russian River estuary
and migrate for tens of miles up the Laguna de Santa Rosa
and other Russian River tributaries. Furthermore, a variety of pelagic birds and shorebirds are locally in evidence. Additionally there are modest kelp
beds and other marine vegetation
. The littoral beach environment has fewer organisms than more southerly zones of California, because of the colder temperatures here.
The coastal prairie soils on the marine terrace above the beach are moderately well drained and granular with moderate soil permeability; these features manifest high erosion potential and moderately high bio-productivity. Acid
ity of these loamy soils is medium to high, and thus some vegetative stunting
and hospitality to rare plants
is offered; however the tree stunting is not as pronounced as farther north along the Mendocino coast, which presents extensive and exaggerated pygmy forest
s. The upland environment on the coastal prairie
offers a range of grass
species and wildflower
s including varieties of lupine
, thistle
and wild oat
s. The typical annual plant productivity is approximately 1500 kilograms per acre of air dried yield per annum in an abundant moisture year, and about half that amount in a very dry year. A variety of birds and mammals thrive on the coastal prairie including numerous California Mule Deer
, Odocoileus hemionus californicus.
Beach
A beach is a geological landform along the shoreline of an ocean, sea, lake or river. It usually consists of loose particles which are often composed of rock, such as sand, gravel, shingle, pebbles or cobblestones...
in northwestern Sonoma County, California
Sonoma County, California
Sonoma County, located on the northern coast of the U.S. state of California, is the largest and northernmost of the nine San Francisco Bay Area counties. Its population at the 2010 census was 483,878. Its largest city and county seat is Santa Rosa....
, United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...
.
This landform is a sub-unit of Sonoma Coast State Beach
Sonoma Coast State Beach
Sonoma Coast State Beach is a State of California property in Sonoma County consisting of public access use on lands adjoining the Pacific Ocean. This extent of beach runs from a coastal point about north of Jenner and continues for approximately to the south to terminate at Bodega Head...
, owned and managed by the State of California
California
California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...
. At the northern terminus of Goat Rock Beach is the mouth
River delta
A delta is a landform that is formed at the mouth of a river where that river flows into an ocean, sea, estuary, lake, reservoir, flat arid area, or another river. Deltas are formed from the deposition of the sediment carried by the river as the flow leaves the mouth of the river...
of the Russian River
Russian River (California)
The Russian River, a southward-flowing river, drains of Sonoma and Mendocino counties in Northern California. With an annual average discharge of approximately , it is the second largest river flowing through the nine county Greater San Francisco Bay Area with a mainstem 110 miles ...
and the southern end of this crescent shaped expanse is the massive Goat Rock, an iconic
Secular icon
A secular icon is an image or pictograph of a person or thing used for other than religious purpose. -Icons versus symbols:...
outcrop
Outcrop
An outcrop is a visible exposure of bedrock or ancient superficial deposits on the surface of the Earth. -Features:Outcrops do not cover the majority of the Earth's land surface because in most places the bedrock or superficial deposits are covered by a mantle of soil and vegetation and cannot be...
of the Sonoma Coast, which is barely attached to the mainland
Mainland
Mainland is a name given to a large landmass in a region , or to the largest of a group of islands in an archipelago. Sometimes its residents are called "Mainlanders"...
by a narrow isthmus
Isthmus
An isthmus is a narrow strip of land connecting two larger land areas usually with waterforms on either side.Canals are often built through isthmuses where they may be particularly advantageous to create a shortcut for marine transportation...
.
Goat Rock Beach is frequented by beachcombing visitors, but usually not in high numbers except in mid-summer; there is some wading and surfing activity, although these uses are moderated by the rip current
Rip current
A rip current, commonly referred to by the misnomer rip tide, is a strong channel of water flowing seaward from near the shore, typically through the surf line. Typical flow is at 0.5 metres per second , and can be as fast as 2.5 metres per second...
generated by a steep gradient into the water that leads to an underwater trench parallel to the waterline. The beach is also a regular resting ground for seagulls, sea otter
Sea Otter
The sea otter is a marine mammal native to the coasts of the northern and eastern North Pacific Ocean. Adult sea otters typically weigh between 14 and 45 kg , making them the heaviest members of the weasel family, but among the smallest marine mammals...
s, elephant seal
Elephant seal
Elephant seals are large, oceangoing seals in the genus Mirounga. There are two species: the northern elephant seal and the southern elephant seal . Both were hunted to the brink of extinction by the end of the 19th century, but numbers have since recovered...
s, harbor seal
Harbor Seal
The harbor seal , also known as the common seal, is a true seal found along temperate and Arctic marine coastlines of the Northern Hemisphere...
s, and sea lion
Sea Lion
Sea lions are pinnipeds characterized by external ear-flaps, long fore-flippers, the ability to walk on all fours, and short thick hair. Together with the fur seal, they comprise the family Otariidae, or eared seals. There are six extant and one extinct species in five genera...
s, the latter three species
Species
In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...
often hauling out of the Pacific Ocean
Pacific Ocean
The Pacific Ocean is the largest of the Earth's oceanic divisions. It extends from the Arctic in the north to the Southern Ocean in the south, bounded by Asia and Australia in the west, and the Americas in the east.At 165.2 million square kilometres in area, this largest division of the World...
. The state of California recommends that a 50 yards (45.7 m) distance be preserved between human visitors and the seasonal marine mammals, especially in the pupping
Pinniped
Pinnipeds or fin-footed mammals are a widely distributed and diverse group of semiaquatic marine mammals comprising the families Odobenidae , Otariidae , and Phocidae .-Overview: Pinnipeds are typically sleek-bodied and barrel-shaped...
season.
Vicinity features
The Russian River, with its mouth at the north end of Goat Rock Beach, is Sonoma County's largest watercourseWatercourse
A watercourse is any flowing body of water. These include rivers, streams, anabranches, and so forth.-See also:* physical geography* Environmental flow* Waterway* Hydrology* Wadi-External links:...
both in flow rate and lineal extent. Immediately beyond the Russian River discharge to the Pacific Ocean
Pacific Ocean
The Pacific Ocean is the largest of the Earth's oceanic divisions. It extends from the Arctic in the north to the Southern Ocean in the south, bounded by Asia and Australia in the west, and the Americas in the east.At 165.2 million square kilometres in area, this largest division of the World...
is the coastal town of Jenner
Jenner, California
Jenner is a small coastal town and census-designated place with a population of about 136 in Sonoma County, California, U.S. It is located on the Pacific coast near the mouth of the Russian River. State Route 1 runs through the town and State Route 116 runs nearby, along the Russian River...
. North of the mouth of the Russian River is Jenner Beach. Goat Rock protrudes into the Pacific at the south end of Goat Rock Beach. Visitors can access the base of Goat Rock via a low lying isthmus
Isthmus
An isthmus is a narrow strip of land connecting two larger land areas usually with waterforms on either side.Canals are often built through isthmuses where they may be particularly advantageous to create a shortcut for marine transportation...
of land which has been appropriated by the State as a parking area. The almost sheer cliff
Cliff
In geography and geology, a cliff is a significant vertical, or near vertical, rock exposure. Cliffs are formed as erosion landforms due to the processes of erosion and weathering that produce them. Cliffs are common on coasts, in mountainous areas, escarpments and along rivers. Cliffs are usually...
s of Goat Rock are virtually impossible to scale or to circumnavigate; in fact, signage is posted prohibiting either activity. There is considerable sloughing of broken rock from these vertical surfaces of Goat Rock. Blind Beach is situated immediately south of Goat Rock Beach, the two beach
Beach
A beach is a geological landform along the shoreline of an ocean, sea, lake or river. It usually consists of loose particles which are often composed of rock, such as sand, gravel, shingle, pebbles or cobblestones...
es being separated by Goat Rock itself.
Along Goat Rock Beach and the adjoining beaches, massive rock outcrop
Outcrop
An outcrop is a visible exposure of bedrock or ancient superficial deposits on the surface of the Earth. -Features:Outcrops do not cover the majority of the Earth's land surface because in most places the bedrock or superficial deposits are covered by a mantle of soil and vegetation and cannot be...
pings are found both on the shore and protruding from the Pacific Ocean as small skerries
Skerry
A skerry is a small rocky island, usually defined to be too small for habitation. It may simply be a rocky reef. A skerry can also be called a low sea stack....
. Among these rugged structures are natural arch
Natural arch
A natural arch or natural bridge is a natural geological formation where a rock arch forms, with an opening underneath. Most natural arches form as a narrow ridge, walled by cliffs, become narrower from erosion, with a softer rock stratum under the cliff-forming stratum gradually eroding out until...
es formed by powerful wave action selectively eroding weaker strata of the rock formations. Approximately seventeen miles to the south is another major geological feature of the Northern California
Northern California
Northern California is the northern portion of the U.S. state of California. The San Francisco Bay Area , and Sacramento as well as its metropolitan area are the main population centers...
coast
Coast
A coastline or seashore is the area where land meets the sea or ocean. A precise line that can be called a coastline cannot be determined due to the dynamic nature of tides. The term "coastal zone" can be used instead, which is a spatial zone where interaction of the sea and land processes occurs...
known as Bodega Head
Bodega Head
Bodega Head is a small promontory on the Pacific coast of northern California in the United States. It is located in Sonoma County at , approximately 40 mi northwest of San Francisco and approximately 20 mi west of Santa Rosa....
. Goat Beach lies below and slightly west of State Route 1
California State Route 1
State Route 1 , more often called Highway 1, is a state highway that runs along much of the Pacific coast of the U.S. state of California. It is famous for running along some of the most beautiful coastlines in the world, leading to its designation as an All-American Road.Highway 1 does not run...
.
During the summer months a sandbar is built up along the beach and separates the Russian river from the Pacific Ocean. This sandbar is breached whenever the water levels reach heights between 4.5 and 7 feet at the Jenner visitor center. Breaching of the sandbar during late fall / early winter splits the beach in two sections. The northern section is protected by the Russian river flowing into the ocean and creates an ideal location for harbor seal pupping.
Geology
Goat Rock Beach is subject to continuing marine erosionErosion
Erosion is when materials are removed from the surface and changed into something else. It only works by hydraulic actions and transport of solids in the natural environment, and leads to the deposition of these materials elsewhere...
as well as windborne erosion, thus creating a situation where an average of one to three feet per year of land mass is lost, except for the hardest of outcrop formations . In winters of heavy storms this value can be yet higher. Over the last geologic
Geology
Geology is the science comprising the study of solid Earth, the rocks of which it is composed, and the processes by which it evolves. Geology gives insight into the history of the Earth, as it provides the primary evidence for plate tectonics, the evolutionary history of life, and past climates...
epoch the land has been subject to uplift, a process combined with marine erosion, which has created a marine terrace
Marine terrace
A marine terrace, coastal terrace, raised beach or perched coastline is a relatively flat, horizontal or gently inclined surface of marine origin, mostly an old abrasion platform which has been lifted out of the sphere of wave activity . Thus it lies above or under the current sea level, depending...
above the entire extent of the beach. This marine terrace elevation varies approximately 30 to 150 feet (10 to 50 meters) above mean sea level, which results in a steep bluff
Cliff
In geography and geology, a cliff is a significant vertical, or near vertical, rock exposure. Cliffs are formed as erosion landforms due to the processes of erosion and weathering that produce them. Cliffs are common on coasts, in mountainous areas, escarpments and along rivers. Cliffs are usually...
directly above the littoral
Littoral
The littoral zone is that part of a sea, lake or river that is close to the shore. In coastal environments the littoral zone extends from the high water mark, which is rarely inundated, to shoreline areas that are permanently submerged. It always includes this intertidal zone and is often used to...
zone, and a succession of terrace levels.
The sea stacks along the coast at Goat Rock Beach consist of rocks from the Franciscan
Franciscan
Most Franciscans are members of Roman Catholic religious orders founded by Saint Francis of Assisi. Besides Roman Catholic communities, there are also Old Catholic, Anglican, Lutheran, ecumenical and Non-denominational Franciscan communities....
Complex, formed within an era of plate collision along the western coast of North America. From about 200 to 30 million years ago, the North American Plate
North American Plate
The North American Plate is a tectonic plate covering most of North America, Greenland, Cuba, Bahamas, and parts of Siberia, Japan and Iceland. It extends eastward to the Mid-Atlantic Ridge and westward to the Chersky Range in eastern Siberia. The plate includes both continental and oceanic crust...
was in continual collision with the Farallon Plate
Farallon Plate
The Farallon Plate was an ancient oceanic plate, which began subducting under the west coast of the North American Plate— then located in modern Utah— as Pangaea broke apart during the Jurassic Period...
. A variety of rock types resulted from this collision, including pillow basalt
Basalt
Basalt is a common extrusive volcanic rock. It is usually grey to black and fine-grained due to rapid cooling of lava at the surface of a planet. It may be porphyritic containing larger crystals in a fine matrix, or vesicular, or frothy scoria. Unweathered basalt is black or grey...
, chert
Chert
Chert is a fine-grained silica-rich microcrystalline, cryptocrystalline or microfibrous sedimentary rock that may contain small fossils. It varies greatly in color , but most often manifests as gray, brown, grayish brown and light green to rusty red; its color is an expression of trace elements...
, and marine sandstone
Sandstone
Sandstone is a sedimentary rock composed mainly of sand-sized minerals or rock grains.Most sandstone is composed of quartz and/or feldspar because these are the most common minerals in the Earth's crust. Like sand, sandstone may be any colour, but the most common colours are tan, brown, yellow,...
. During the plate collisions, these rocks were considerably faulted and crushed into melange, which is a mixture of ground-up matrix and resistant pockets of rock floating within. When melange is eroded by wave action, the softer part of the matrix is washed away, leaving the more resistant blocks exposed in the ocean as sea stacks. Goat Rock is such a flat topped sea stack comprised by a block of resistant greywacke
Greywacke
Greywacke or Graywacke is a variety of sandstone generally characterized by its hardness, dark color, and poorly sorted angular grains of quartz, feldspar, and small rock fragments or lithic fragments set in a compact, clay-fine matrix. It is a texturally immature sedimentary rock generally found...
.
Vertical sea stack formations, a geological hallmark of this shoreline, appear standing out of the water or on the beach
Beach
A beach is a geological landform along the shoreline of an ocean, sea, lake or river. It usually consists of loose particles which are often composed of rock, such as sand, gravel, shingle, pebbles or cobblestones...
resembling sculptures. Occasionally these stacks appear on the marine terrace, indicating their ancient genesis on the sea floor prior to uplift. These rock formations are characteristically composed of sandstone
Sandstone
Sandstone is a sedimentary rock composed mainly of sand-sized minerals or rock grains.Most sandstone is composed of quartz and/or feldspar because these are the most common minerals in the Earth's crust. Like sand, sandstone may be any colour, but the most common colours are tan, brown, yellow,...
with layers of quartz
Quartz
Quartz is the second-most-abundant mineral in the Earth's continental crust, after feldspar. It is made up of a continuous framework of SiO4 silicon–oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall formula SiO2. There are many different varieties of quartz,...
.
The active San Andreas Fault
San Andreas Fault
The San Andreas Fault is a continental strike-slip fault that runs a length of roughly through California in the United States. The fault's motion is right-lateral strike-slip...
runs roughly parallel and near to the coastline of Goat Rock Beach. Soil
Soil
Soil is a natural body consisting of layers of mineral constituents of variable thicknesses, which differ from the parent materials in their morphological, physical, chemical, and mineralogical characteristics...
s within the site are classified as coastal beach sands (where rocky shore
Rocky shore
A rocky shore is an intertidal area of seacoasts where solid rock predominates. Rocky shores are biologically rich environments, and make the ideal natural laboratory for studying intertidal ecology and other biological processes...
line is not evident) and escarpment
Escarpment
An escarpment is a steep slope or long cliff that occurs from erosion or faulting and separates two relatively level areas of differing elevations.-Description and variants:...
group soils on the marine terrace; typically soils above the marine terrace are in the Rohnerville loam group. Most of the beach sands consist of a medium coarse brown to gray sand
Sand
Sand is a naturally occurring granular material composed of finely divided rock and mineral particles.The composition of sand is highly variable, depending on the local rock sources and conditions, but the most common constituent of sand in inland continental settings and non-tropical coastal...
y materials, reflecting the high rate of erosion of escarpment
Escarpment
An escarpment is a steep slope or long cliff that occurs from erosion or faulting and separates two relatively level areas of differing elevations.-Description and variants:...
soils into the ocean; however, there are patches of dark gray smooth pebble
Pebble
A pebble is a clast of rock with a particle size of 4 to 64 millimetres based on the Krumbein phi scale of sedimentology. Pebbles are generally considered to be larger than granules and smaller than cobbles . A rock made predominantly of pebbles is termed a conglomerate...
beach such as the approximately one hundred meter stretch lying immediately north of Goat Rock.The beach is changed every year.
Area history
The oldest natural history
Natural history
Natural history is the scientific research of plants or animals, leaning more towards observational rather than experimental methods of study, and encompasses more research published in magazines than in academic journals. Grouped among the natural sciences, natural history is the systematic study...
of this area related to mammal
Mammal
Mammals are members of a class of air-breathing vertebrate animals characterised by the possession of endothermy, hair, three middle ear bones, and mammary glands functional in mothers with young...
s manifests in a series of rock outcrop
Outcrop
An outcrop is a visible exposure of bedrock or ancient superficial deposits on the surface of the Earth. -Features:Outcrops do not cover the majority of the Earth's land surface because in most places the bedrock or superficial deposits are covered by a mantle of soil and vegetation and cannot be...
s about one third of a mile south of Goat Rock Beach, positioned above the shoreline on a low lying marine terrace
Marine terrace
A marine terrace, coastal terrace, raised beach or perched coastline is a relatively flat, horizontal or gently inclined surface of marine origin, mostly an old abrasion platform which has been lifted out of the sphere of wave activity . Thus it lies above or under the current sea level, depending...
. There are uplifted sea stack formations with prominent rubbing marks about two to four meters in elevation above the ground surface, a height too high to have been caused by modern bovids. Mammoth
Mammoth
A mammoth is any species of the extinct genus Mammuthus. These proboscideans are members of Elephantidae, the family of elephants and mammoths, and close relatives of modern elephants. They were often equipped with long curved tusks and, in northern species, a covering of long hair...
s are believed to have roamed here as recently as 40,000 years ago, and they are thought to have created these severe rubbing marks. Mammoth fossil remains have been found at Bodega Head
Bodega Head
Bodega Head is a small promontory on the Pacific coast of northern California in the United States. It is located in Sonoma County at , approximately 40 mi northwest of San Francisco and approximately 20 mi west of Santa Rosa....
at the south end of Sonoma Coast State Beach.
The earliest known human settlement of this site was by the Native American
Indigenous peoples of the Americas
The indigenous peoples of the Americas are the pre-Columbian inhabitants of North and South America, their descendants and other ethnic groups who are identified with those peoples. Indigenous peoples are known in Canada as Aboriginal peoples, and in the United States as Native Americans...
Coast Miwok
Coast Miwok
The Coast Miwok were the second largest group of Miwok Native American people. The Coast Miwok inhabited the general area of modern Marin County and southern Sonoma County in Northern California, from the Golden Gate north to Duncans Point and eastward to Sonoma Creek...
and Pomo tribes. As early as 1849 archaeological discoveries were recorded in the vicinity, and to date several prehistoric kitchen midden
Midden
A midden, is an old dump for domestic waste which may consist of animal bone, human excrement, botanical material, vermin, shells, sherds, lithics , and other artifacts and ecofacts associated with past human occupation...
s and other types of tribal habitation finds have been made. Goat Rock Beach is part of the Mexican land grant
Ranchos of California
The Spanish, and later the Méxican government encouraged settlement of territory now known as California by the establishment of large land grants called ranchos, from which the English ranch is derived. Devoted to raising cattle and sheep, the owners of the ranchos attempted to pattern themselves...
rancho Bodega
Rancho Bodega
Rancho Bodega was a Mexican land grant in present day Sonoma County, California given in 1844 by Governor Manuel Micheltorena to Stephen Smith. Bodega takes its name from the Peruvian explorer Juan Francisco de la Bodega y Quadra who discovered Bodega Bay in 1775...
. The Russians
Russians
The Russian people are an East Slavic ethnic group native to Russia, speaking the Russian language and primarily living in Russia and neighboring countries....
are thought to have begun logging the old-growth forests directly above the coastal prairie in the early 19th century.
The underwater delineation of the property is considered to extend to 1000 feet from the shore
Shore
A shore or shoreline is the fringe of land at the edge of a large body of water, such as an ocean, sea, or lake. In Physical Oceanography a shore is the wider fringe that is geologically modified by the action of the body of water past and present, while the beach is at the edge of the shore,...
line. While no shipwreck
Shipwreck
A shipwreck is what remains of a ship that has wrecked, either sunk or beached. Whatever the cause, a sunken ship or a wrecked ship is a physical example of the event: this explains why the two concepts are often overlapping in English....
s have been discovered, the literature indicates that there are at least 17 vessels which may have been lost in these waters. There are remains of numerous historic barns and other agricultural buildings on the coastal prairie several miles south of Goat Rock Beach, indicating 19th century settlement by Europe
Europe
Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...
ans; to the south, at Duncans Landing there are iron pins embedded in the sandstone bluffs as evidence of an active shipping industry here in the late 19th and early 20th century.
In the era circa 1920, a sizeable quarry
Quarry
A quarry is a type of open-pit mine from which rock or minerals are extracted. Quarries are generally used for extracting building materials, such as dimension stone, construction aggregate, riprap, sand, and gravel. They are often collocated with concrete and asphalt plants due to the requirement...
ing was conducted at Goat Rock, which activity produced the apparent separation of Goat Rock from the mainland. Quarry products were transported to the mouth of the Russian River via a now abandoned rail line; some of these materials were used to attempt the construction of a jetty
Jetty
A jetty is any of a variety of structures used in river, dock, and maritime works that are generally carried out in pairs from river banks, or in continuation of river channels at their outlets into deep water; or out into docks, and outside their entrances; or for forming basins along the...
in the mouth area, but that project was eventually terminated.
Flora and fauna
There are three distinct habitatHabitat
* Habitat , a place where a species lives and grows*Human habitat, a place where humans live, work or play** Space habitat, a space station intended as a permanent settlement...
s present at Goat Rock Beach, including marine, littoral zone and coastal prairie
Coastal prairie
Coastal prairie may refer to either:* The California coastal prairie, a plant community found along the coasts of California and Oregon* The Western Gulf coastal grasslands of Louisiana, Texas, and Tamaulipas...
. The marine environment presents gray whale
Gray Whale
The gray whale, Eschrichtius robustus, is a baleen whale that migrates between feeding and breeding grounds yearly. It reaches a length of about , a weight of , and lives 50–70 years. The common name of the whale comes from the gray patches and white mottling on its dark skin. Gray whales were...
s, harbor seal
Harbor Seal
The harbor seal , also known as the common seal, is a true seal found along temperate and Arctic marine coastlines of the Northern Hemisphere...
s and California sea lion
California Sea Lion
The California sea lion is a coastal sea lion of western North America. Their numbers are abundant , and the population continues to expand about 5% annually. They are quite intelligent and can adapt to man-made environments...
s as well as a multitude of fish species
Species
In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...
and other marine organism
Organism
In biology, an organism is any contiguous living system . In at least some form, all organisms are capable of response to stimuli, reproduction, growth and development, and maintenance of homoeostasis as a stable whole.An organism may either be unicellular or, as in the case of humans, comprise...
s; in fact, several species of anadromous fish enter the Russian River estuary
Estuary
An estuary is a partly enclosed coastal body of water with one or more rivers or streams flowing into it, and with a free connection to the open sea....
and migrate for tens of miles up the Laguna de Santa Rosa
Laguna de Santa Rosa
The Laguna de Santa Rosa is a long wetland complex that drains a 254-square mile watershed encompassing most of the Santa Rosa Plain in Sonoma County, California, USA.-Description:...
and other Russian River tributaries. Furthermore, a variety of pelagic birds and shorebirds are locally in evidence. Additionally there are modest kelp
Kelp
Kelps are large seaweeds belonging to the brown algae in the order Laminariales. There are about 30 different genera....
beds and other marine vegetation
Vegetation
Vegetation is a general term for the plant life of a region; it refers to the ground cover provided by plants. It is a general term, without specific reference to particular taxa, life forms, structure, spatial extent, or any other specific botanical or geographic characteristics. It is broader...
. The littoral beach environment has fewer organisms than more southerly zones of California, because of the colder temperatures here.
The coastal prairie soils on the marine terrace above the beach are moderately well drained and granular with moderate soil permeability; these features manifest high erosion potential and moderately high bio-productivity. Acid
Acid
An acid is a substance which reacts with a base. Commonly, acids can be identified as tasting sour, reacting with metals such as calcium, and bases like sodium carbonate. Aqueous acids have a pH of less than 7, where an acid of lower pH is typically stronger, and turn blue litmus paper red...
ity of these loamy soils is medium to high, and thus some vegetative stunting
Pygmy forest
A pygmy forest is a forest which, for pedological and geological reasons, contains only miniature trees. Pygmy forests may occur over various world locations with notable occurrences being noted in the literature of the: California coastal terraces and inner coastal mountains of Northern...
and hospitality to rare plants
Rare species
A rare species is a group of organisms that are very uncommon or scarce. This designation may be applied to either a plant or animal taxon, and may be distinct from the term "endangered" or "threatened species" but not "extinct"....
is offered; however the tree stunting is not as pronounced as farther north along the Mendocino coast, which presents extensive and exaggerated pygmy forest
Pygmy forest
A pygmy forest is a forest which, for pedological and geological reasons, contains only miniature trees. Pygmy forests may occur over various world locations with notable occurrences being noted in the literature of the: California coastal terraces and inner coastal mountains of Northern...
s. The upland environment on the coastal prairie
Coastal prairie
Coastal prairie may refer to either:* The California coastal prairie, a plant community found along the coasts of California and Oregon* The Western Gulf coastal grasslands of Louisiana, Texas, and Tamaulipas...
offers a range of grass
Grass
Grasses, or more technically graminoids, are monocotyledonous, usually herbaceous plants with narrow leaves growing from the base. They include the "true grasses", of the Poaceae family, as well as the sedges and the rushes . The true grasses include cereals, bamboo and the grasses of lawns ...
species and wildflower
Wildflower
A wildflower is a flower that grows wild, meaning it was not intentionally seeded or planted. Yet "wildflower" meadows of a few mixed species are sold in seed packets. The term "wildflower" has been made vague by commercial seedsmen who are interested in selling more flowers or seeds more...
s including varieties of lupine
Lupine
Lupine may be one of several things:*Something that is like, or relating to, a wolf .*A variant spelling for lupin, a flowering plant.*Lu Pine Records, a record label in Detroit.*Lupine Games, a computer game company....
, thistle
Thistle
Thistle is the common name of a group of flowering plants characterised by leaves with sharp prickles on the margins, mostly in the family Asteraceae. Prickles often occur all over the plant – on surfaces such as those of the stem and flat parts of leaves. These are an adaptation that protects the...
and wild oat
Wild oat
Wild oat may refer to:*Common wild oat or Avena fatua*Slender wild oat or Avena barbata*Winter wild oat or Avena sterilis...
s. The typical annual plant productivity is approximately 1500 kilograms per acre of air dried yield per annum in an abundant moisture year, and about half that amount in a very dry year. A variety of birds and mammals thrive on the coastal prairie including numerous California Mule Deer
California Mule Deer
California mule deer, Odocoileus hemionus californicus, is a subspecies of mule deer whose range covers much of the state of California. This species is widespread throughout northern and central California in the California coastal prairie as well as inner coastal ranges and interior mountains,...
, Odocoileus hemionus californicus.
Practical matters
Due to these potential safety risks of the rip currents at Goat Rock Beach, swimming is strictly prohibited. There are restroom facilities, a parking lot, and picnic tables on site. Hang-gliding is permitted from a 150 high launch point on a high marine terrace above the southern part of Goat Rock Beach, provided the participant is in possession of USHGA card, Sonoma Wings card and signed waiver card.Popular culture
- The naming of Goat Rock is disputed, but many accounts indicate some goatherds circa early 20th century used the flat grassy top of the formation for grazing goatGoatThe domestic goat is a subspecies of goat domesticated from the wild goat of southwest Asia and Eastern Europe. The goat is a member of the Bovidae family and is closely related to the sheep as both are in the goat-antelope subfamily Caprinae. There are over three hundred distinct breeds of...
s, since few other species could scale the steep slopes - Goat Rock Beach polled as the second most popular beach venue in Sonoma County with readers of Metroactive
- The final scene of The GooniesThe GooniesThe Goonies is a 1985 American adventure-comedy film directed by Richard Donner. The screenplay was written by Chris Columbus from a story by executive producer Steven Spielberg. The premise surrounds a band of pre-teens who live in the "Goon Docks" neighborhood of Astoria, Oregon hoping to save...
was filmed at Goat Rock Beach.