State · United States · USGS · BOR · USACE · CDEC
Washington
31% average fill
Measured
15
Data pending
2
Volume stored
1,245 hm³
Measured capacity
4,019 hm³
Critical
6
Low level
6
Below month average
8 of 14
Loading map…
Drought Monitor · 13 October 2026
Weekly map · area in each categoryDrought status
65.8%
of the area in drought (D1 or worse)
Worst category: D3 extreme drought
unchanged on the week
Severe or worse (D2+)
25.2%
Extreme or worse (D3+)
4.4%
DSCI
1900–500
People in drought
2.5 million
Reservoirs (reservoirs.earth)
31.0% full15 tracked
Reservoirs on drought ground
7 of 172 in D2 or worse
As of the 13 October 2026 U.S. Drought Monitor map, 65.8% of Washington was in drought (D1 or worse), with 4.4% in extreme or exceptional drought (D3–D4). The 15 reservoirs we track in Washington were 31.0% full on their latest readings. 7 of 17 tracked reservoir sites sit inside the drought area, 2 of them in severe drought (D2) or worse.
The Drought Monitor maps where conditions are dry this week — rainfall, soil moisture, streamflow — not how much water is stored. Reservoir storage lags it by months, so a region can be in drought with full reservoirs, or out of drought with empty ones. Source: droughtmonitor.unl.edu. The U.S. Drought Monitor is jointly produced by the National Drought Mitigation Center at the University of Nebraska-Lincoln, the United States Department of Agriculture, the National Oceanic and Atmospheric Administration and the National Aeronautics and Space Administration. Map courtesy of NDMC.
Reservoirs
Sorted by capacityBanks Lake
Updated 2026-10-13· 100% of month avg· D1
Potholes Reservoir
criticalUpdated 2026-10-14· 98% of month avg· D1
Cle Elum Lake
criticalUpdated 2026-10-14· 60% of month avg· D1
Kachess Lake
lowUpdated 2026-10-14· 120% of month avg· D0
Rimrock Lake
lowUpdated 2026-10-14· 148% of month avg· D0
Keechelus Lake
criticalUpdated 2026-10-14· 55% of month avg· D0
Mud Mountain Lake
criticalUpdated 2026-10-14· D0
Howard A. Hanson Reservoir
lowUpdated 2026-10-14· 159% of month avg· D0
Wynoochee Lake
lowUpdated 2026-10-14· 54% of month avg· D0
Billy Clapp Lake
lowUpdated 2026-10-14· 127% of month avg· D1
Lake Tapps
Updated 2026-10-14· 92% of month avg· D0
Bumping Lake
criticalUpdated 2026-10-14· 93% of month avg· D0
Conconully Lake
lowUpdated 2026-10-14· 66% of month avg· D3
Scooteney Reservoir
Updated 2026-10-14· 109% of month avg· D1
Conconully Reservoir
criticalUpdated 2026-10-14· 23% of month avg· D3
Storage from official US gauges (USGS, USACE, Bureau of Reclamation, CDEC) and, in Texas, the Texas Water Development Board. Fill % uses design capacity from the National Inventory of Dams where available; Water Data for Texas lakes use that board's conservation capacity; a few sites without a match fall back to the 5-year maximum. "% of month avg" compares the current fill with the reservoir’s own average for this calendar month over its readings on record. D0–D4 is the U.S. Drought Monitor category of the ground at the reservoir’s coordinates on the latest weekly map — local conditions, not storage.
Major reservoirs — data pending
2 major reservoirs — data sourcing in progress
Storage is monitored by the US Geological Survey (USGS NWIS), but the live feed is currently stale — we are working to restore it. Known capacities: Alder Reservoir (0.3 km³), Mayfield Reservoir (0.2 km³).
About reservoirs in Washington
As of October 14, 2026, the reservoirs we track across Washington that report live levels hold roughly 1,245 hm³ of water — about 31.0% of their combined capacity. Taken together, Washington's reservoirs are low.
Across the region, 6 reservoirs are at critically low levels and 6 are low. Lake Tapps is the fullest at 84.1%, while Mud Mountain Lake is the lowest at 0.0%.
Over the most recent week on record, 1 reservoir rose and 5 reservoirs fell across Washington.
Storage figures for Washington come from USGS · USACE · BOR · CDEC; the most recent reading is from October 14, 2026. Each reservoir below links to its own page with full history and seasonal context.
Washington at a glance
- Reservoirs tracked
- 15
- Average fill
- 31.0%
- Water stored
- 1,245 hm³
- Combined capacity
- 4,019 hm³
- At critically low levels
- 6
- Fullest
- Lake Tapps (84.1%)
- Lowest
- Mud Mountain Lake (0.0%)
- Last updated
- October 14, 2026