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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

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Drought Monitor · 13 October 2026

Weekly map · area in each category

Drought status

65.8%

of the area in drought (D1 or worse)

Worst category: D3 extreme drought

unchanged on the week

D0 28.4%D1 40.6%D2 20.8%D3 4.4%D4 0%

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 capacity

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
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