Calabazas Creek steelhead run area immediately upstream of confluence with Sonoma Creek.

Calabazas Creek is a stream in the Sonoma Valley, California, USA that rises on the southern slopes of the southern Mayacmas Mountains. The headwaters form in Nunns Canyon from the convergence of several perennial unnamed streams approximately 5.2 miles upstream from the Sonoma Creek confluence.^[1] The upper reaches of Calabazas Creek are relatively pristine with a dense forest canopy of mixed oak woodland, while the lower reaches on the Sonoma Valley floor have considerable encroachment by rural residential development, vineyards and other agricultural uses. One of Sonoma County's oldest stone arch bridges, from the year 1915, spans Calabazas Creek near Dunbar School.^[2] As of 2007 the Sonoma County Open Space District has acquired 1290 acres in this watershed for conservation purposes, and is currently drawing up plans for future public access Binomial name Oncorhynchus mykiss Walbaum, 1792 The Rainbow Trout (Oncorhynchus mykiss), also called steelhead trout, is a single species of trout native to the Pacific Ocean and in North American rivers and lakes west of the Rocky Mountains. ... Look up confluence in Wiktionary, the free dictionary. ... Waterfall at Sugarloaf Mountain headwaters of Sonoma Creek Sonoma Creek is one of two principal drainages of Southern Sonoma County, California, with headwaters rising in the rugged hills of Sugarloaf Ridge State Park and discharge to San Pablo Bay, the northern arm of San Francisco Bay. ... A running stream. ... Today in a town we like to call sonoma valley about 17 minutes away from santa rosa Sean virrtoes was cought with his pants down and know we have reason to believe that sean is not straight but might be gay we have reached a new world change, ALSo just... Official language(s) English Capital Sacramento Largest city Los Angeles Area  Ranked 3rd  - Total 158,302 sq mi (410,000 km²)  - Width 250 miles (400 km)  - Length 770 miles (1,240 km)  - % water 4. ... The Mayacmas Mountains are located in northwestern California in the United States. ... A Red Valerian, a perennial plant. ... Look up confluence in Wiktionary, the free dictionary. ... Species See List of Quercus species The term oak can be used as part of the common name of any of several hundred species of trees and shrubs in the genus Quercus, and some related genera, notably Cyclobalanopsis and Lithocarpus. ... Limber Pine woodland, Toiyabe Range, central Nevada Biologically, a woodland is a treed area differentiated from a forest. ... A vineyard Vineyard with bird netting Wine grapes with netting as protection against birds A vineyard (vignoble in French, vigna or vigneto in Italian, vinha in Portuguese, viña or viñedo in Spanish, Weinberg in German) is a place where grapes are grown for making wine, raisins, or table... This article is about the edifice (including an index to articles on specific bridge types). ... 1915 (MCMXV) was a common year starting on Friday (see link for calendar). ... Conservation may refer to the following: Conservation ethic in relation to preserving ecosystems Conservationist Conservation movement Conservation ecology Conservation biology Energy conservation in reducing non-renewable energy consumption Conservation law of physics Conservation of energy Conservation of mass Conservation (genetics) in genetics Conservation (botany) in botanical nomenclature Conservation (psychology) in... Public access television is a cable television service that allows members of the public to use a cable companys facilities and equipment to create and broadcast their own content. ...

Calabazas Creek, a tributary of Sonoma Creek, has historically hosted a robust steelhead run.^[3]. As late as 2001 spawning gravel studies were conducted in Calabazas along with Graham Creek, Bear Creek, Carriger Creek and mainstem Sonoma Creek; these studies demonstrated that adequacy of spawning gravels and absence of sedimentation are not limited factors for anadromous fish propagation.^[4] Waterfall at Sugarloaf Mountain headwaters of Sonoma Creek Sonoma Creek is one of two principal drainages of Southern Sonoma County, California, with headwaters rising in the rugged hills of Sugarloaf Ridge State Park and discharge to San Pablo Bay, the northern arm of San Francisco Bay. ... Binomial name Oncorhynchus mykiss Walbaum, 1792 The Rainbow Trout (Oncorhynchus mykiss), also called steelhead trout, is a single species of trout native to the Pacific Ocean and in North American rivers and lakes west of the Rocky Mountains. ... Graham Creek (38. ... Bear Creek is the name, or part of the name, of numerous places in the United States: Bear Creek, Alabama Bear Creek, Alaska Bear Creek Township, Michigan Bear Creek Township, Minnesota Bear Creek Township, Pennsylvania Bear Creek Village, Pennsylvania Bear Creek, Texas Bear Creek, Outagamie County, Wisconsin Bear Creek, Sauk... Gravel being unloaded from a barge Gravel is rock that is of a certain grain size range. ... Sedimentation describes the motion of particles in solutions or suspensions in response to an external force such as gravity, centrifugal force or electric force. ... Many types of fish undertake migrations on a regular basis, on time scales ranging from daily to annual, and with distances ranging from a few meters to thousands of kilometers. ...

Geology

Madrone tree in upper watershed of Calabazas Creek, showing shallow rooting due to thin soil mantle.

Up until about twelve million years ago, this location was part of the seabed of the Pacific Ocean. In the Miocene era, precipitated by the combination of tectonic movement due to the seismically active environment and the presence of magma not far below the earth's surface, a massive period of uplift ensued. This uplift formed the volcanically based Mayacmas Mountains. Residual evidence of these ancient geological features appears in the form of scattered outcrops of basalt and rhyolite as well as local hot springs such as nearby Mortons Hot Springs and Agua Caliente Hot Springs.^[5] Some rock quarrying was historically conducted near Nunns Canyon Road in the upper Calabazas Creek watershed. Species See text Arbutus is a genus of trees in the family Ericaceae. ... The seabed is the bottom of the ocean. ... The Miocene epoch is a period of time that extends from about 23 to 5. ... ... Seismology (from the Greek seismos = earthquake and logos = word) is the scientific study of earthquakes and the movement of waves through the Earth. ... Magma is molten rock located beneath the surface of the Earth (or any other rocky planet), and which often collects in a magma chamber. ... Look up uplift in Wiktionary, the free dictionary. ... Volcano 1. ... The Mayacmas Mountains are located in northwestern California in the United States. ... World geologic provinces Oceanic crust  0-20 Ma  20-65 Ma  >65 Ma Geologic provinces  Shield  Platform  Orogen  Basin  Large igneous province  Extended crust Geology (from Greek γη- (ge-, the earth) and λογος (logos, word, reason))[1] is the science and study of the solid matter of the earth, its composition, structure... Outcrop is a geological term referring to the appearance of bedrock exposed at the surface of the Earth. ... Basalt Columnar basalt at Sheepeater Cliff in Yellowstone Basalt (IPA: ) is a common gray to black volcanic rock. ... Rhyolite This page is about a volcanic rock. ... Green Dragon Spring at Norris Geyser A hot spring is a place where warm or hot groundwater issues from the ground on a regular basis for at least a predictable part of the year, and is significantly above the ambient ground temperature (which is usually around 55~57°F or... Fetters Hot Springs-Agua Caliente is a census-designated place located in Sonoma County, California. ... A small cinder quarry A dimension stone quarry A quarry is a type of open-pit mine from which rock or minerals are extracted. ... Watershed has more than one meaning: Look up watershed in Wiktionary, the free dictionary. ...

Upper reach

Riparian zone habitat of upper Calabazas Creek.

The upper reach can be defined as the portion of Calabazas Creek north of its crossing of California State Route 12, which point lies approximately three miles upsteam of the confluence with Sonoma Creek. Initially there are two large ranches on either side of Calabazas Creek: Beltane Ranch to the west and Atwood Ranch to the east. Proceeding upstream for the next mile, there is continuous close viewing of the creek, since Nunns Canyon Road runs near the top of the west streambanks. An abandoned rock quarry is situated about 0.3 miles north of State Route 12 on the west bank. A well maintained Riparian strip on a tributary to Lake Erie. ... Look up habitat in Wiktionary, the free dictionary. ... JUNCTION POSTMILE SR-116 SON 9. ...

Where Nunns Canyon Road terminates, Calabazas Creek enters into an 1290 acre open space nature preserve owned and managed by the Sonoma County Open Space District; as of 2007, there is no public access to this prior holding of the Beltane Ranch, which has been named the Calabazas Creek Open Space Preserve.^[6] In addition to a relatively pristine riparian zone, the upper Calabazas Creek has a high quality California oak woodland, much of which is an undisturbed ecosystem with considerable biodiversity, particularly in the upper 1.7 miles of the headwaters. Some of the steeply sloped forested areas are characterized as good examples of such woodlands, testifying to the absence of historic grazing or other agriculture. A nature reserve is an area of importance for wildlife, flora, fauna or features of geological or other special interest, which is reserved and managed for conservation and to provide special opportunities for study or research. ... Sonoma County is a county located on Californias Pacific coast north of the San Francisco Bay Area. ... A well maintained Riparian strip on a tributary to Lake Erie. ... California oak woodland is a plant community found throughout the California chaparral and woodlands ecoregion of California and northwestern Baja California. ... Rainforests are among the most biodiverse ecosystems on earth Biodiversity or biological diversity is the variation of taxonomic life forms within a given ecosystem, biome or for the entire Earth. ... Grazing is the regular consumption of part of one organism without killing it by another organism. ...

Besides the riparian habitat, the dominant plant community is is the oak woodland, which has a canopy of coast live oak, Pacific Madrone, Douglas fir, Coast Redwood and California laurel.^[7] In the oak woodlands, the dominant understory plants are native toyon, blackberry and western poison-oak. Common animals observed include Black-tailed Deer, gray squirrel, jackrabbit, raccoon, skunk and opossum. Less frequently mountain lion are seen. There is abundant birdlife including the scrub jay, Steller's jay, Acorn woodpecker, Black Phoebe and junco. A number of amphibians occur near the creek and its tributary elements, including the Rough skinned newt, Taricha granulosa. A riparian zone schematic from the Everglades. ... The canopy is the habitat found at the uppermost level of a forest, especially rainforest. ... Binomial name Quercus agrifolia The Coast live oak, Quercus agrifolia, also called the California live oak, is an evergeen oak, highly variable and often shrubby, found in the coastal regions of southwestern North America from Mendocino County, California south to northern Baja California in Mexico. ... ... Species See text. ... Binomial name Sequoia sempervirens (D. Don) Endl. ... Binomial name Umbellularia californica Umbellularia californica is an evergreen tree of the Lauraceae family. ... Understory (or understorey) is the term for the area of a forest which grows in the shade of the overstory or canopy. ... Binomial name Heteromeles arbutifolia (Lindl. ... The BlackBerry is a wireless handheld device introduced in 1999 which supports push e-mail, mobile telephone, text messaging, internet faxing, web browsing and other wireless information services. ... Binomial name Toxicodendron diversilobum (Torr. ... Trinomial name Odocoileus hemionus columbianus Richardson, 1829 Like all deer, black-tailed deer are herbivores. ... Gray squirrel is the common name for two species of squirrel native to North America: The Eastern Gray Squirrel (also introduced elsewhere) The Western Gray Squirrel. ... It has been suggested that Jackrabbits be merged into this article or section. ... This article or section does not cite its references or sources. ... Genera Conepatus Mydaus Mephitis Spilogale Skunks are moderately small mammals, usually with black-and-white fur, belonging to the family Mephitidae and to the order Carnivora. ... This article or section should be merged with Virginia_opossum The word opossum (usually pronounced without the leading O, or with only a very slight schwa) refers either to the Virginia Opossum in particular, or more generally to any of the other marsupials of magnorder Ameridelphia. ... Binomial name Puma concolor (Linnaeus, 1771) The puma (Puma concolor) is a type of large cat found in North, Central and South America. ... Aves redirects here. ... Species Aphelocoma californica – Western Scrub Jay Aphelocoma coerulescens – Florida Scrub Jay Aphelocoma insularis – Island Scrub Jay Aphelocoma ultramarina – Mexican Jay Aphelocoma unicolor – Unicolored Jay The scrub jays are passerine birds of the genus Aphelocoma. ... Binomial name Cyanocitta stelleri (Gmelin, 1788) The Stellers Jay (Cyanocitta stelleri) is a jay of western North America, closely related to the Blue Jay found in the rest of the continent, but having a black head and upper body. ... Binomial name Melanerpes formicivorus (Swainson,, 1827) The Acorn Woodpecker (Melanerpes formicivorus) is a medium-sized woodpecker. ... Binomial name Sayornis nigricans (Swainson, 1827) The Black Phoebe (Sayornis nigricans) is a distinctive tyrant flycatcher native to western North America, from southwestern Oregon and California to west Texas and northern Mexico. ... Species Junco hyemalis - Dark-eyed Junco Junco insularis - Guadalupe Junco Junco phaeonotus - Yellow-eyed Junco Junco vulcani - Volcano Junco The Juncos, genus Junco, comprise three to eight species of small American sparrow. ... Subclasses and Orders Order Temnospondyli - extinct Subclass Lepospondyli - extinct Subclass Lissamphibia   Anura   Caudata   Gymnophiona Amphibians (class Amphibia; from Greek αμφις both and βιος life) are a taxon of animals that include all living tetrapods (four-legged vertebrates) that do not have amniotic eggs, are ectotherms, and generally spend part of their time... Binomial name Taricha granulosa The rough-skinned newt (Taricha granulosa) is a North American newt known for its strong poison. ...

See also

• Basalt
• Miwok

Basalt Columnar basalt at Sheepeater Cliff in Yellowstone Basalt (IPA: ) is a common gray to black volcanic rock. ... Miwok—also spelled Miwuk or Me-Wuk—refers to native Californians who lived in what is now Northern California. ...

References