Mad River Valley – Lowland
- Basin Name
- Mad River Valley – Lowland
- Basin Number
- SGMA Basin Priority
- Very Low
- Critically Overdrafted
- Hydrologic Region Name
- North Coast Hydrologic Region
- Adjacent Basins
Mad River Valley - Dows Prairie School Area 1-008.02,
Located in California’s North Coast Hydrologic Region hydrologic region, the Mad River Valley – Lowland is 25,600 acres in size. This Very Low priority basin is home to an estimated 22,224 people (2010 value), which have been at a rate of . Mad River Valley – Lowland is a(n) mixed urban/agriculture (2) basin with approximately 355 wells, of which approximately 6 are water supply wells. Groundwater accounts for approximately 70 percent of the basin’s water supply.
1975: Ground-water Conditions in the Eureka Area, Humboldt County, California, U.S. Geological Survey
2003: Mad River Valley division into two subbasins, Bulletin 118 update
2018: County of Humboldt response to draft change of the subbasin priority from low to medium, which subjects it to SGMA.
2018 Basin Prioritization: Status of basin remains unchanged at very low.