Groundwater Basin Boundary Descriptions - North Coast Region (1-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 one (1-XXX) indicating they are located in the North Coast Region
Data files
Supporting files
| Data title and description | Access data | File details | Last updated |
|---|---|---|---|
1-001_Smith River Plain_BasinBoundaryDescription This file contains the official basin boundary description for the Smith River Plain (1-001) groundwater basin. | PDF | 07/18/25 | |
1-002.01_Klamath River Valley_Tulelake_BasinBoundaryDescription This file contains the official basin boundary description for the Klamath River Valley - Tulelake (1-002.01) groundwater basin. | PDF | 07/18/25 | |
1-002.02_Klamath River Valley_Lower Klamath_BasinBoundaryDescription This file contains the official basin boundary description for the Klamath River Valley - Lower Klamath (1-002.02) groundwater basin. | PDF | 07/18/25 | |
1-003_Butte Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Butte Valley (1-003) groundwater basin. | PDF | 07/18/25 | |
1-004_Shasta Valley_Shasta Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Shasta Valley - Shasta Valley (1-004) groundwater basin. | PDF | 07/18/25 | |
1-005_Scott River Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Scott River Valley (1-005) groundwater basin. | PDF | 07/18/25 | |
1-006_Hayfork Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Hayfork Valley (1-006) groundwater basin. | PDF | 07/18/25 | |
1-007_Hoopa Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Hoopa Valley (1-007) groundwater basin. | PDF | 07/18/25 | |
1-008.01_Mad River Valley_Mad River Lowland_BasinBoundaryDescription This file contains the official basin boundary description for the Mad River Valley - Mad River Lowland (1-008.01) groundwater basin. | PDF | 07/18/25 | |
1-008.02_Mad River Valley_Dows Prairie School Area_BasinBoundaryDescription This file contains the official basin boundary description for the Mad River Valley - Dows Prairie School Area (1-008.02) groundwater basin. | PDF | 07/18/25 | |
1-009_Eureka Plain_BasinBoundaryDescription This file contains the official basin boundary description for the Eureka Plain (1-009) groundwater basin. | PDF | 07/18/25 | |
1-010_Eel River Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Eel River Valley (1-010) groundwater basin. | PDF | 07/18/25 | |
1-011_Covelo Round Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Covelo Round Valley (1-011) groundwater basin. | PDF | 07/18/25 | |
1-012_Laytonville Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Laytonville Valley (1-012) groundwater basin. | PDF | 07/18/25 | |
1-013_Little Lake Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Little Lake Valley (1-013) groundwater basin. | PDF | 07/18/25 | |
1-014_Lower Klamath River Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Lower Klamath River Valley (1-014) groundwater basin. | PDF | 07/18/25 | |
1-015_Happy Camp Town Area_BasinBoundaryDescription This file contains the official basin boundary description for the Happy Camp Town Area (1-015) groundwater basin. | PDF | 07/18/25 | |
1-016_Seiad Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Seiad Valley (1-016) groundwater basin. | PDF | 07/18/25 | |
1-017_Bray Town Area_BasinBoundaryDescription This file contains the official basin boundary description for the Bray Town Area (1-017) groundwater basin. | PDF | 07/18/25 | |
1-018_Red Rock Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Red Rock Valley (1-018) groundwater basin. | PDF | 07/18/25 | |
1-019_Anderson Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Anderson Valley (1-019) groundwater basin. | PDF | 07/18/25 | |
1-020_Garcia River Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Garcia River Valley (1-020) groundwater basin. | PDF | 07/18/25 | |
1-021_Fort Bragg Terrace Area_BasinBoundaryDescription This file contains the official basin boundary description for the Fort Bragg Terrace Area (1-021) groundwater basin. | PDF | 07/18/25 | |
1-022_Fairchild Swamp Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Fairchild Swamp Valley (1-022) groundwater basin. | PDF | 07/18/25 | |
1-025_Prairie Creek Area_BasinBoundaryDescription This file contains the official basin boundary description for the Prairie Creek Area (1-025) groundwater basin. | PDF | 07/18/25 | |
1-026_Redwood Creek Area_BasinBoundaryDescription This file contains the official basin boundary description for the Redwood Creek Area (1-026) groundwater basin. | PDF | 07/18/25 | |
1-027_Big Lagoon Area_BasinBoundaryDescription This file contains the official basin boundary description for the Big Lagoon Area (1-027) groundwater basin. | PDF | 07/18/25 | |
1-028_Mattole River Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Mattole River Valley (1-028) groundwater basin. | PDF | 07/18/25 | |
1-029_Honeydew Town Area_BasinBoundaryDescription This file contains the official basin boundary description for the Honeydew Town Area (1-029) groundwater basin. | PDF | 07/18/25 | |
1-030_Pepperwood Town Area_BasinBoundaryDescription This file contains the official basin boundary description for the Pepperwood Town Area (1-030) groundwater basin. | PDF | 07/18/25 | |
1-031_Weott Town Area_BasinBoundaryDescription This file contains the official basin boundary description for the Weott Town Area (1-031) groundwater basin. | PDF | 07/18/25 | |
1-032_Garberville Town Area_BasinBoundaryDescription This file contains the official basin boundary description for the Garberville Town Area (1-032) groundwater basin. | PDF | 07/18/25 | |
1-033_Larabee Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Larabee Valley (1-033) groundwater basin. | PDF | 07/18/25 | |
1-034_Dinsmores Town Area_BasinBoundaryDescription This file contains the official basin boundary description for the Dinsmores Town Area (1-034) groundwater basin. | PDF | 07/18/25 | |
1-035_Hyampom Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Hyampom Valley (1-035) groundwater basin. | PDF | 07/18/25 | |
1-036_Hettenshaw Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Hettenshaw Valley (1-036) groundwater basin. | PDF | 07/18/25 | |
1-037_Cottoneva Creek Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Cottoneva Creek Valley (1-037) groundwater basin. | PDF | 07/18/25 | |
1-038_Lower Laytonville Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Lower Laytonville Valley (1-038) groundwater basin. | PDF | 07/18/25 | |
1-039_Branscomb Town Area_BasinBoundaryDescription This file contains the official basin boundary description for the Branscomb Town Area (1-039) groundwater basin. | PDF | 07/18/25 | |
1-040_Ten Mile River Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Ten Mile River Valley (1-040) groundwater basin. | PDF | 07/18/25 | |
1-041_Little Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Little Valley (1-041) groundwater basin. | PDF | 07/18/25 | |
1-042_Sherwood Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Sherwood Valley (1-042) groundwater basin. | PDF | 07/18/25 | |
1-043_Williams Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Williams Valley (1-043) groundwater basin. | PDF | 07/18/25 | |
1-044_Eden Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Eden Valley (1-044) groundwater basin. | PDF | 07/18/25 | |
1-045_Big River Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Big River Valley (1-045) groundwater basin. | PDF | 07/18/25 | |
1-046_Navarro River Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Navarro River Valley (1-046) groundwater basin. | PDF | 07/18/25 | |
1-048_Gravelly Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Gravelly Valley (1-048) groundwater basin. | PDF | 07/18/25 | |
1-049_Annapolis Ohlson Ranch Fm Highlands_BasinBoundaryDescription This file contains the official basin boundary description for the Annapolis Ohlson Ranch Fm Highlands (1-049) groundwater basin. | PDF | 07/18/25 | |
1-050_Knights Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Knights Valley (1-050) groundwater basin. | PDF | 07/18/25 | |
1-051_Potter Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Potter Valley (1-051) groundwater basin. | PDF | 07/18/25 | |
1-052_Ukiah Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Ukiah Valley (1-052) groundwater basin. | PDF | 07/18/25 | |
1-053_Sanel Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Sanel Valley (1-053) groundwater basin. | PDF | 07/18/25 | |
1-054.01_Alexander Valley_Alexander Area_BasinBoundaryDescription This file contains the official basin boundary description for the Alexander Valley - Alexander Area (1-054.01) groundwater basin. | PDF | 07/18/25 | |
1-054.02_Alexander Valley_Cloverdale Area_BasinBoundaryDescription This file contains the official basin boundary description for the Alexander Valley - Cloverdale Area (1-054.02) groundwater basin. | PDF | 07/18/25 | |
1-055.01_Santa Rosa Valley_Santa Rosa Plain_BasinBoundaryDescription This file contains the official basin boundary description for the Santa Rosa Valley - Santa Rosa Plain (1-055.01) groundwater basin. | PDF | 07/18/25 | |
1-055.02_Santa Rosa Valley_Healdsburg Area_BasinBoundaryDescription This file contains the official basin boundary description for the Santa Rosa Valley - Healdsburg Area (1-055.02) groundwater basin. | PDF | 07/18/25 | |
1-055.03_Santa Rosa Valley_Rincon Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Santa Rosa Valley - Rincon Valley (1-055.03) groundwater basin. | PDF | 07/18/25 | |
1-056_Mcdowell Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Mcdowell Valley (1-056) groundwater basin. | PDF | 07/18/25 | |
1-057_Bodega Bay Area_BasinBoundaryDescription This file contains the official basin boundary description for the Bodega Bay Area (1-057) groundwater basin. | PDF | 07/18/25 | |
1-059_Wilson Grove Formation Highlands_BasinBoundaryDescription This file contains the official basin boundary description for the Wilson Grove Formation Highlands (1-059) groundwater basin. | PDF | 07/18/25 | |
1-060_Lower Russian River Valley_BasinBoundaryDescription This file contains the official basin boundary description for the Lower Russian River Valley (1-060) groundwater basin. | PDF | 07/18/25 | |
1-061_Fort Ross Terrace Deposits_BasinBoundaryDescription This file contains the official basin boundary description for the Fort Ross Terrace Deposits (1-061) groundwater basin. | PDF | 07/18/25 | |
1-062_Wilson Point Area_BasinBoundaryDescription This file contains the official basin boundary description for the Wilson Point Area (1-062) groundwater basin. | PDF | 07/18/25 |