Lake Powell Glen Canyon Dam and Powerplant
Daily instantaneous storage
5,136,840 acre-ft· US Bureau of Reclamation / RISE
State water view
Arizona
Local water conditions, public water systems and state planning records. Check the sources and reporting dates for each topic.
Explore national comparisons →6 state data topics · 2 management regions
U.S. Drought Monitor ·
Drought conditions in Arizona
This is the latest drought map in this publication, effective 2026-10-13; it is not a live report.
12 of 15 counties have moderate drought (D1) or worse covering at least 1% of county area. The previous map, 2026-10-06, had 12 such counties.
County counts by highest category covering at least 1%: None: 0 · D0: 3 · D1: 6 · D2: 6 · D3: 0 · D4: 0. These are county counts, not percentages of state land or population. D0 means abnormally dry, not drought.
- Maricopa County — D1 or worse: 78.55% of county area
- Pima County — D1 or worse: 41.54% 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
Arizona reservoir measurements
Explore 4 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.
Lake Mead Hoover Dam and Powerplant
Daily instantaneous storage
6,835,190 acre-ft· US Bureau of Reclamation / RISE
Lake Havasu Parker Dam and Powerplant
Daily instantaneous storage
521,177 acre-ft· US Bureau of Reclamation / RISE
Lake Mohave Davis Dam and Powerplant
Daily instantaneous storage
1,634,370 acre-ft· US Bureau of Reclamation / RISE
River flow
Arizona river-gauge histories
Explore daily flow readings and history at 170 named USGS gauges in Arizona. 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.
AGUA FRIA RIVER NEAR HUMBOLDT, AZ
Daily mean flow at the named gauge
3.43 ft³/s· US Geological Survey
AGUA FRIA RIVER NEAR MAYER, AZ
Daily mean flow at the named gauge
1.09 ft³/s· US Geological Survey
AGUA FRIA RIVER NEAR ROCK SPRINGS, AZ
Daily mean flow at the named gauge
6.43 ft³/s· US Geological Survey
ALTAR WASH NEAR THREE POINTS, AZ.
Daily mean flow at the named gauge
0 ft³/s· US Geological Survey
ARAVAIPA CREEK NEAR MAMMOTH, AZ.
Daily mean flow at the named gauge
16.8 ft³/s· US Geological Survey
BABOCOMARI RIVER NEAR TOMBSTONE, AZ
Daily mean flow at the named gauge
0.27 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.
Historical water demand
Phoenix AMA demand: reported history and an older scenario.
These older reports show how demand was measured and projected at the time. They do not describe current Arizona demand or today’s forecast.
2025 draft scenario sectors
agriculturalprojected demand331,836 AF/yr
indianprojected demand495,148 AF/yr
industrialprojected demand190,163 AF/yr
municipalprojected demand1,490,773 AF/yr
riparian otherprojected demand48,000 AF/yr
DRAFT SUBJECT TO REVISION. Lowest reasonable water-demand baseline scenario prepared for the Fourth Management Plan assessment. Historical data were obtained from annual withdrawal and use reports; 2010-2025 values are an October 2010 planning scenario, not observations or a current plan forecast.
Arizona AMA assessment archiveArizona water planning
Water planning in Arizona
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
- Assured 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
- Reported use
- 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
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
- Assured supply
- Reporting period
- Plan cycle
Partial records
Water rights
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
- Water rights
- 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
Phoenix Active Management AreaActive management areaTucson Active Management AreaActive management areaSources and limitations
These pages show Central Arizona Project supply connections, not live delivery amounts. A 100-year assured-supply finding is not a guarantee of uninterrupted supply.
- Arizona Department of Water Resources: Assured and Adequate Water Supply ProgramsDesignation is a regulatory/program finding, not a live measure of water availability.
- Arizona Department of Water Resources: AMA Data Management AssessmentsSector totals and storage accounting require AMA-specific interpretation.
- Arizona Department of Water Resources: Permits, forms, and annual water-use reportsPermits and authorized uses must not be presented as actual withdrawals.
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.
PhoenixLocal conditions and state records · imported water · rapid growthTucsonState planning information · groundwater dependent · imported waterMesaState planning information · rapid growthScottsdaleState planning information · rapid growthDiscovery
Continue beyond Arizona
These places share geography or comparable data. Their water conditions may differ.