San Dieguito Watershed
From SDCK Watershed Wiki
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The San Dieguito River watershed is a drainage area of approximately 346 square miles in west-central San Diego County. The watershed includes portions of the cities of Del Mar, Escondido, Poway, San Diego, and Solana Beach, and unincorporated San Diego County. In terms of land area, the majority of the watershed (79.8%) is within the unincorporated jurisdiction. The San Dieguito River watershed is presently divided into vacant/undeveloped (54%), parks/open space (29 %), and urban (18%) land uses. Nearly half of the vacant land area is open to future development, most of which is zoned for residential usage. The current watershed population is approximately 125,000 however; this level is projected increase to over 210,000 residents by 2015.
Coastkeeper Sites and Sampling Frequency
San Diego Coastkeeper currently conducts monthly water quality monitoring at 3 sites in the San Dieguito watershed.
The Site codes and their locations are as follows:
SGT-020 : San Dieguito River at Via de Santa Fe just south of Via de la Valle
SGT-025: Lusardi Creek on Artesian Road
SGT-028: Del Dios Highway near the fruit stand
Previously Monitored Locations:
SGT.1 : San Dieguito River at Del Mar- El Camino Real
SGT.3 : Lake Hodges at Windsurfing School on Lake Drive
Beach Water Quality Data
15 Street/Powerhouse Park in Del Mar
Note:
- Actual units are either CFU/100mL or MPN/100mL.
- Values for Escherichia Coli have been converted to Fecal Coliform with a conversion factor of (1.2).
General Watershed Information
Hydrologic Unit: 905.11 - 905.54
Hydrologic Areas: Solana Beach 905.1 ; Hodges 905.2 ; San Pasqual 905.3 ; Santa Maria Valley 905.4 ; Santa Ysabel 905.5
Major Water Bodies: (i)San Dieguito River (ii)San Dieguito Lagoon (iii)Lake Hodges
Impaired Waterbodies in the San Dieguito Watershed
CWA 303(d) List :
| Waterbody | Pollutant/Stressor |
|---|---|
| Cloverdale Creek | Phosphorus, Total Dissolved Solids |
| Felicita Creek | Aluminium, Total Dissolved Solids |
| Green Valley Creek | Chloride, Manganese, Pentachlorophenol(PCP), Sulfates |
| Hodges Lake | Color, Manganese, Nitrogen, pH, Phosphorus, Turbidity |
| Kit Carson Creek | Pentachlorophenol(PCP), Total Dissolved Solids |
| Pacific Ocean Shoreline,San Dieguito HU | Indicator bacteria |
| Sutherland Reservoir | Color, Manganese, pH |
Watershed Land Use
Land Use by type
| Type | Share of Watershed |
|---|---|
| Residential | 19.0% |
| Commercial | 5.5% |
| Parks & Open Spaces | 60.0% |
| Golf Course | 1.2% |
| Agriculture | 13.0% |
| Under Construction | 0.1% |
| Industry | 0.4% |
Watershed Captains
George Liddle
Resources
San Dieguito River Valley Conservancy
Research Studies and Reports
Surface Water Ambient Monitoring Program (SWAMP) Report on the San Dieguito Hydrologic Unit - 2007
Civic Involvement
