Ocean, bays, rivers and streams Sonoma County, California




1 ocean, bays, rivers , streams

1.1 russian river
1.2 laguna de santa rosa
1.3 other water bodies





ocean, bays, rivers , streams

goat rock beach viewed jenner cliffs looking south, showing mouth of russian river @ pacific ocean.


sonoma county bounded on west pacific ocean, , has 76 miles (122 km) of coastline. major coastal hydrographic features bodega bay, mouth of russian river, , mouth of gualala river, @ border mendocino county. of county s beaches listed cleanest in state in 2010.


six of county s 9 cities, healdsburg south through santa rosa rohnert park , cotati, in santa rosa plain. northern plain drains russian river, or tributary; southern plain drains russian river via laguna de santa rosa.


russian river

much of central , northern sonoma county in watershed of russian river , tributaries. river rises in coastal mountains of mendocino county, north of city of ukiah, , flows lake mendocino, major flood control reservoir. russian flows south lake through mendocino sonoma county, paralleled highway 101. turns west @ healdsburg, receiving water lake sonoma via dry creek, , empties pacific ocean @ jenner.


laguna de santa rosa

the laguna de santa rosa largest tributary of russian river. 14 miles (23 km) long, running north cotati russian river near forestville. flood plain more 7,500 acres (30 km). drains 254-square-mile (660 km) watershed, including of santa rosa plain.


the laguna de santa rosa foundation says:



the laguna de santa rosa sonoma county s richest area of wildlife habitat, , biologically diverse region of sonoma county (itself second-most biologically diverse county in california)... unique ecological system covering more 30,000 acres (120 km) , comprisedof mosaic of creeks, open water, perennial marshes, seasonal wetlands, riparian forests, oak woodlands , grasslands... receiving water of watershed of county s human population lives, landscape feature of critical importance sonoma county s water quality, flood control, , biodiversity.



the laguna s largest tributary santa rosa creek, runs through santa rosa. major tributaries brush creek, mark west creek, matanzas creek, spring creek , piner creek. matanzas creek shown polluted in sonoma county first flush results.


other water bodies

the boundary marin county runs mouth of estero americano @ bodega bay, americano creek, overland san antonio creek , down petaluma river mouth @ northwest corner of san pablo bay, adjoins san francisco bay. southern edge of sonoma county comprises northern shore of san pablo bay between marin county border @ petaluma river , border solano county @ sonoma creek. sonoma county has no incorporated communities directly on shore of san pablo bay. @ present there private marina related facilities called port sonoma near mouth of petaluma river. however, petaluma river flows san pablo bay, navigable city of petaluma.


the petaluma river, tolay creek, , sonoma creek enter bay @ county s southernmost tip. intertidal zone join bay vast napa sonoma marsh.


americano creek, petaluma river, tolay creek, , sonoma creek principal streams draining southern portion of county. sonoma valley drained sonoma creek, major tributaries yulupa creek, graham creek, calabazas creek, schell creek , carriger creek; arroyo seco creek tributary schell creek. other creeks include foss, felta, , mill creeks.


lakes , reservoirs in county include lake sonoma, tolay lake, lake ilsanjo, santa rosa creek reservoir, lake ralphine, , fountaingrove lake.








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