Contra Costa County Watershed Program
The County Watershed Program (CWP) administers the Municipal Regional Stormwater National Pollutant Discharge Elimination System (NPDES) Permit (MRP) for unincorporated County. CWP works with many County departments to meet the requirements.
Drainage Area Maps | Contra Costa County, CA Official Website
The Drainage Area Hydrology Map shows the watershed and sub-watershed boundaries and assumed direction of drainage. The Drainage Area Plan shows the proposed improvements to be funded by the drainage area, typically storm drain pipes and detention basins.
Watersheds - CCCleanWater
Contra Costa County has 31 major watersheds that drain to the Bay or Delta. Additionally, Contra Costa County includes the headwaters of creeks that drain through other counties before reaching the Bay. Contra Costa County Watersheds. Baxter, Cerrito, and West Richmond Watersheds; Wildcat Creek Watershed; San Pablo Creek Watershed
WATERSHEDS - CCRCD
The Walnut Creek Watershed has 309 miles of creek channels accounting for almost a quarter of all mapped creek channels in Contra Costa County. The watershed extends from San Ramon to the south, Martinez to the north, Moraga and Orinda to the west, and Concord to the east.
DCD Maps and Data | Contra Costa County, CA Official Website
C CMAP - Contra Costa County's Department of Information Technology (DOIT) hosts online mapping tool. DOIT GIS Data Catalog. For custom map or data analysis, please contact us and we will provide a quote for GIS services. Watershed Atlas.
Maps of the Walnut Creek Watershed - Friends of the Creeks
This map provides an overview of the watershed with the freeways and cities as reference points. Maps of the Walnut Creek Watershed. Click on any map for a larger version. The Walnut Creek watershed is the largest in Contra Costa County at about 96,000 acres or 150 square miles.
Contra Costa County Watershed Atlas is an important document for people concerned about watersheds in the county. The 150-page, full-color book includes maps, photographs, statistics, and text.
Watersheds - City of San Ramon - San Ramon, California
There are 31 major watersheds in Contra Costa County that drain to the Bay or Delta. Additionally, Contra Costa County includes the headwaters of creeks that drain through other counties before reaching the Bay. Below are watersheds in the County and San Ramon.
Explore Contra Costa Creeks! - The Watershed Project
Click on a watershed, or a creek listed on the left of the map, to explore further. Each creek has a home page where you can learn about the length of the creek as well as other interesting facts about it, such as how much of the watershed is natural vs. covered in impervious surfaces such as roads and houses.
Home | Water Quality in Contra Costa County
Contra Costa County has over 20 major creeks, as identified by the Contra Costa County Watershed Atlas. Spread out through natural and urban spaces, these waterways exist in several forms: natural, concrete, or underground.