Shasta Dam (Usbr)
Daily reported storage
2,477,120 acre-ft· California Department of Water Resources / CDEC
State water view
California
Local water conditions, public water systems and state planning records. Check the sources and reporting dates for each topic.
Explore national comparisons →8 state data topics · 4 management regions
U.S. Drought Monitor ·
Drought conditions in California
This is the latest drought map in this publication, effective 2026-10-13; it is not a live report.
17 of 58 counties have moderate drought (D1) or worse covering at least 1% of county area. The previous map, 2026-10-06, had 17 such counties.
County counts by highest category covering at least 1%: None: 15 · D0: 26 · D1: 17 · D2: 0 · D3: 0 · D4: 0. These are county counts, not percentages of state land or population. D0 means abnormally dry, not drought.
- Los Angeles County — D1 or worse: 0% of county area
- San Diego County — D1 or worse: 0% of county area
Open the drought map and historical playback · U.S. Drought Monitor source
Public drinking-water systems
Open a system for its available testing and source records. A system’s service area can cross city and county boundaries.
Water levels and storage
California reservoir measurements
Explore 140 official reservoir reporting records. Choose a location for dated readings and history. Dates, methods and agency coverage vary. Some agencies monitor the same reservoir; these records are not a count of unique lakes and must not be summed. Storage does not establish drinking-water safety or your home’s water supply.
Oroville Dam
Daily reported storage
1,695,719 acre-ft· California Department of Water Resources / CDEC
Folsom Lake
Daily reported storage
432,772 acre-ft· California Department of Water Resources / CDEC
San Luis Reservoir
Daily reported storage
1,434,530 acre-ft· California Department of Water Resources / CDEC
Castaic
Daily reported storage
310,211 acre-ft· California Department of Water Resources / CDEC
Perris
Daily reported storage
124,647 acre-ft· California Department of Water Resources / CDEC
River flow
California river-gauge histories
Explore daily flow readings and history at 432 named USGS gauges in California. These are individual monitoring sites, not a complete inventory or a river-wide water-health score. Check the gauge location, date and source notes. Flow does not establish drinking-water safety or supply to a home.
4L C NR MARKLEEVILLE CA
Daily mean flow at the named gauge
0 ft³/s· US Geological Survey
AGUA CHINON WASH A PORTOLA SPRINGS RD NR IRVINE CA
Daily mean flow at the named gauge
0 ft³/s· US Geological Survey
ALAMEDA C A SUNOL WATER TEMPLE A SUNOL CA
Daily mean flow at the named gauge
10.9 ft³/s· US Geological Survey
ALAMEDA C AB DIV DAM NR SUNOL CA
Daily mean flow at the named gauge
0.14 ft³/s· US Geological Survey
ALAMEDA C BL CALAVERAS C NR SUNOL CA
Daily mean flow at the named gauge
7.18 ft³/s· US Geological Survey
ALAMEDA C BL DIV DAM NR SUNOL CA
Daily mean flow at the named gauge
0.13 ft³/s· US Geological Survey
Available records
Available tests and water assessments
These counts bring together results from local place pages, and some may overlap. They tell you how much information is available, not how much water is in good or poor condition.
California water planning
Water planning in California
State planning records and permits describe supply and management decisions. They are separate from measurements of current conditions.
Partial records
Supply
About these records
These details come from official state plans and reports. A planning estimate describes what may be needed or supplied, not what was measured today.
- Measure
- Urban supply
- Reporting period
- Plan cycle
Partial records
Demand
About these records
These details come from official state plans and reports. A planning estimate describes what may be needed or supplied, not what was measured today.
- Measure
- Urban demand
- Reporting period
- Plan cycle
Partial records
Future demand
About these records
These details come from official state plans and reports. A planning estimate describes what may be needed or supplied, not what was measured today.
- Measure
- Projected demand
- Reporting period
- Plan cycle
State records
Groundwater
About these records
These details come from official state plans and reports. A planning estimate describes what may be needed or supplied, not what was measured today.
- Measure
- Groundwater
- Reporting period
- Plan cycle
Partial records
Reservoirs
About these records
These details come from official state plans and reports. A planning estimate describes what may be needed or supplied, not what was measured today.
- Measure
- Reservoir
- Reporting period
- Observation
Partial records
Snowpack
About these records
These details come from official state plans and reports. A planning estimate describes what may be needed or supplied, not what was measured today.
- Measure
- Snowpack
- Reporting period
- Observation
State records
Water planning
About these records
These details come from official state plans and reports. A planning estimate describes what may be needed or supplied, not what was measured today.
- Measure
- Utility and groundwater plan
- Reporting period
- Plan cycle
Partial records
Imported water
About these records
These details come from official state plans and reports. A planning estimate describes what may be needed or supplied, not what was measured today.
- Measure
- Imported water
- Reporting period
- Plan cycle
Water planning regions
South Coast hydrologic regionHydrologic regionSacramento River hydrologic regionHydrologic regionSan Joaquin River hydrologic regionHydrologic regionSan Francisco Bay hydrologic regionHydrologic regionSources and limitations
These overview cards explain water management and planning; they do not reproduce each provider’s Urban Water Management Plan tables. State Water Project, Central Valley Project, Colorado River, local water and groundwater sources are shown separately.
- California Department of Water Resources: SGMA Portal and Basin PrioritizationBasin priority and plan status are governance indicators, not groundwater-level observations.
- California Department of Water Resources: Urban Water Management PlansPlanning scenarios and reliability assessments are utility-specific.
- California Department of Water Resources: California Water Data and reservoir/snow contextReservoir percent full and snowpack percent of average are different metrics.
Places to explore
Places in this state
Some places have local conditions and testing records; others have state planning information. More data does not mean better or worse water.
Los AngelesLocal conditions and state records · imported water · major metroSan DiegoState planning information · coastal · imported waterSacramentoState planning information · surface water dependentFresnoState planning information · groundwater dependent · agricultural regionSan JoseState planning information · imported water · major metroDiscovery
Continue beyond California
These places share geography or comparable data. Their water conditions may differ.