Groundwater Basin Boundary Descriptions - San Diego Region (9-XXX Basins)
This dataset includes the official groundwater basin boundary descriptions for California's 515 groundwater basins. To make locating descriptions easier, they have been organized by region. This resource contains descriptions for basins that start with the number nine (9-XXX) indicating they are located in the San Diego Region.
Data files
Supporting files
| Data title and description | Access data | File details | Last updated |
|---|---|---|---|
9-001_San Juan Valley_BasinBoundaryDescription This file contains the official basin boundary description for the San Juan Valley (9-001) groundwater basin. | Download | PDF | 07/18/25 |
9-002_San Mateo Valley_BasinBoundaryDescription This file contains the official basin boundary description for the San Mateo Valley (9-002) groundwater basin. | Download | PDF | 07/18/25 |
9-003_San Onofre Valley_BasinBoundaryDescription This file contains the official basin boundary description for the San Onofre Valley (9-003) groundwater basin. | Download | PDF | 07/18/25 |
9-004_Santa Margarita Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Santa Margarita Valley (9-004) groundwater basin. | Download | PDF | 07/18/25 |
9-005_Temecula Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Temecula Valley (9-005) groundwater basin. | Download | PDF | 07/18/25 |
9-006_Cahuilla Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Cahuilla Valley (9-006) groundwater basin. | Download | PDF | 07/18/25 |
9-007.01_San Luis Rey Valley_Upper San Luis Rey Valley_BasinBoundaryDescription This file contains the official basin boundary description for the San Luis Rey Valley - Upper San Luis Rey Valley (9-007.01) groundwater basin. | Download | PDF | 07/18/25 |
9-007.02_San Luis Rey Valley_Lower San Luis Rey Valley_BasinBoundaryDescription This file contains the official basin boundary description for the San Luis Rey Valley - Lower San Luis Rey Valley (9-007.02) groundwater basin. | Download | PDF | 07/18/25 |
9-008_Warner Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Warner Valley (9-008) groundwater basin. | Download | PDF | 07/18/25 |
9-009_Escondido Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Escondido Valley (9-009) groundwater basin. | Download | PDF | 07/18/25 |
9-010_San Pasqual Valley_BasinBoundaryDescription This file contains the official basin boundary description for the San Pasqual Valley (9-010) groundwater basin. | Download | PDF | 07/18/25 |
9-011_Santa Maria Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Santa Maria Valley (9-011) groundwater basin. | Download | PDF | 07/18/25 |
9-012_San Dieguito Creek_BasinBoundaryDescription This file contains the official basin boundary description for the San Dieguito Creek (9-012) groundwater basin. | Download | PDF | 07/18/25 |
9-013_Poway Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Poway Valley (9-013) groundwater basin. | Download | PDF | 07/18/25 |
9-014_Mission Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Mission Valley (9-014) groundwater basin. | Download | PDF | 07/18/25 |
9-015_San Diego River Valley_BasinBoundaryDescription This file contains the official basin boundary description for the San Diego River Valley (9-015) groundwater basin. | Download | PDF | 07/18/25 |
9-016_El Cajon Valley_BasinBoundaryDescription This file contains the official basin boundary description for the El Cajon Valley (9-016) groundwater basin. | Download | PDF | 07/18/25 |
9-022_Batiquitos Lagoon Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Batiquitos Lagoon Valley (9-022) groundwater basin. | Download | PDF | 07/18/25 |
9-023_San Elijo Valley_BasinBoundaryDescription This file contains the official basin boundary description for the San Elijo Valley (9-023) groundwater basin. | Download | PDF | 07/18/25 |
9-024_Pamo Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Pamo Valley (9-024) groundwater basin. | Download | PDF | 07/18/25 |
9-025_Ranchita Town Area_BasinBoundaryDescription This file contains the official basin boundary description for the Ranchita Town Area (9-025) groundwater basin. | Download | PDF | 07/18/25 |
9-027_Cottonwood Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Cottonwood Valley (9-027) groundwater basin. | Download | PDF | 07/18/25 |
9-028_Campo Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Campo Valley (9-028) groundwater basin. | Download | PDF | 07/18/25 |
9-029_Potrero Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Potrero Valley (9-029) groundwater basin. | Download | PDF | 07/18/25 |
9-032_San Marcos Area_BasinBoundaryDescription This file contains the official basin boundary description for the San Marcos Area (9-032) groundwater basin. | Download | PDF | 07/18/25 |
9-033_Coastal Plain Of San Diego_BasinBoundaryDescription This file contains the official basin boundary description for the Coastal Plain Of San Diego (9-033) groundwater basin. | Download | PDF | 07/18/25 |