Laguna de Santa Rosa

Laguna de Santa Rosa
Looking northeast across the Laguna de Santa Rosa with the Mayacamas Mountains in the background
Location of the mouth of Laguna de Santa Rosa in California
EtymologySpanish
Location
CountryUnited States
StateCalifornia
RegionSonoma County
CitiesSanta Rosa, Sebastopol, Cotati
Physical characteristics
Source 
  locationwest of Cotati, California
  coordinates38°19′4″N 122°43′21″W / 38.31778°N 122.72250°W / 38.31778; -122.72250
  elevation260 ft (79 m)
MouthMark West Creek
  location
east of Forestville, California
  coordinates
38°28′12″N 122°50′27″W / 38.47000°N 122.84083°W / 38.47000; -122.84083
  elevation
46 ft (14 m)
Length22 mi (35 km)
Basin size254 sq mi (660 km2)
Basin features
Tributaries 
  leftWashoe Creek, Blucher Creek
  rightSanta Rosa Creek, Hinebaugh Creek, Five Creek
Protection status
Official nameLaguna de Santa Rosa Wetland Complex
Designated16 April 2010
Reference no.1930
Laguna de Santa Rosa
US 101
Cotati
Rohnert Park
US 101
Copeland Creek
Washoe Creek
Hinebaugh Creek
Five Creek
Stony Point Road
Llano Road
Sewage Treatment Plant
Colgan Creek
Todd Road
Blucher Creek
Joe Rodota Trail
SR 12, Sebastopol
Laguna Watershed Preserve
Occidental Road
Santa Rosa Creek
Guerneville Road
Mark West Creek
River Road

The Laguna de Santa Rosa is a 22-mile-long (35 km) wetland complex that drains a 254-square-mile (660 km2) watershed encompassing most of the Santa Rosa Plain in Sonoma County, California, United States.

The California Office of Environmental Health Hazard Assessment has issued a safe eating advisory for any fish caught in Laguna de Santa Rosa due to elevated levels of mercury and PCBs. In addition, there is a notice of "do not eat" for black bass.