State · United States · USGS · BOR · USACE · CDEC

Oklahoma

65.4% average fill

Measured

Data pending

Volume stored

11,262 hm³

Measured capacity

17,212 hm³

Critical

Low level

Below month average

27 of 44

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Drought Monitor · 27 October 2026

Weekly map · area in each category

Drought status

87.3%

of the area in drought (D1 or worse)

Worst category: D4 exceptional drought

down 1.9 points on the week

D0 12.6%D1 20.7%D2 40.4%D3 19.1%D4 7.1%

Severe or worse (D2+)

66.6%

Extreme or worse (D3+)

26.2%

DSCI

2870–500

People in drought

3.4 million

Reservoirs (reservoirs.earth)

65.4% full45 tracked

Reservoirs on drought ground

46 of 4939 in D2 or worse

As of the 27 October 2026 U.S. Drought Monitor map, 87.3% of Oklahoma was in drought (D1 or worse), with 26.2% in extreme or exceptional drought (D3–D4). The 45 reservoirs we track in Oklahoma were 65.4% full on their latest readings. 46 of 49 tracked reservoir sites sit inside the drought area, 39 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

Eufaula Lake

81.7%2,333 hm³View →

Updated 2026-10-29· 101% of month avg· D3

Grand Lake o' the Cherokees

80.2%1,613 hm³View →

Updated 2026-10-28· 100% of month avg· D2

Tenkiller Lake

48.7%713 hm³View →

Updated 2026-10-29· 98% of month avg· D3

Fort Gibson Lake

low

33.9%468 hm³View →

Updated 2026-10-29· 98% of month avg· D2

Oologah Lake

52.4%654 hm³View →

Updated 2026-10-29· 100% of month avg· D2

Broken Bow Lake

84.6%958 hm³View →

Updated 2026-10-29· 98% of month avg· D3

Keystone Lake

48.5%528 hm³View →

Updated 2026-10-29· 109% of month avg· D0

Kaw Lake

52.6%454 hm³View →

Updated 2026-10-29· 106% of month avg· D0

RS Kerr LD15

69.6%451 hm³View →

Updated 2026-10-29· 97% of month avg· D4

Lake Hudson near Locust Grove

54.0%266 hm³View →

Updated 2026-10-28· 101% of month avg· D2

Skiatook Lake

87.2%356 hm³View →

Updated 2026-10-29· 99% of month avg· D1

Sardis Lake

89.0%301 hm³View →

Updated 2026-10-29· 99% of month avg· D1

Wister Lake

critical

15.2%37 hm³View →

Updated 2026-10-29· 89% of month avg· D2

Waurika Lake

89.2%209 hm³View →

Updated 2026-10-29· 100% of month avg· D2

Webbers Falls LD16

62.4%131 hm³View →

Updated 2026-10-29· 96% of month avg· D3

Foss Reservoir

83.9%175 hm³View →

Updated 2026-10-28· 94% of month avg· D3

Hugo Lake

61.3%120 hm³View →

Updated 2026-10-29· 94% of month avg· D3

Lake Thunderbird

78.9%116 hm³View →

Updated 2026-10-28· 95% of month avg· D2

Pine Creek Lake

critical

12.2%17 hm³View →

Updated 2026-10-29· 72% of month avg· D3

Mcgee Creek Reservoir

77.4%108 hm³View →

Updated 2026-10-28· 90% of month avg· D3

McGee Creek Reservoir

83.7%117 hm³View →

Updated 2026-09-23· 96% of month avg· D3

Canton Lake

70.9%97 hm³View →

Updated 2026-10-29· 97% of month avg· D4

Atoka Reservoir

89.2%120 hm³View →

Updated 2026-10-28· 94% of month avg· D2

Lake of the Arbuckles

65.2%88 hm³View →

Updated 2026-10-28· 102% of month avg· D0

Hulah Lake

critical

14.4%18 hm³View →

Updated 2026-10-29· 98% of month avg· D1

Stanley Draper Lake

83.8%103 hm³View →

Updated 2026-10-28· 96% of month avg· D2

Tom Steed Reservoir

71.7%86 hm³View →

Updated 2026-10-28· 110% of month avg· D4

Fort Cobb Reservoir

92.9%92 hm³View →

Updated 2026-10-28· 111% of month avg· D1

Lake Eucha

71.2%70 hm³View →

Updated 2026-10-28· 88% of month avg· D2

Lake Hefner

100.4%92 hm³View →

Updated 2026-10-28· 112% of month avg· D2

Lake Ellsworth

low

22.1%16 hm³View →

Updated 2026-10-28· 36% of month avg· D3

Lake Lawtonka

78.6%53 hm³View →

Updated 2026-10-28· 93% of month avg· D3

Spavinaw Lake

68.3%32 hm³View →

Updated 2026-10-28· 99% of month avg· D2

W.D. Mayo LD14

96.6%42 hm³View →

Updated 2026-10-29· 103% of month avg· D3

Shawnee Reservoir

66.1%28 hm³View →

Updated 2026-10-28· 88% of month avg· D2

Lake Fuqua

57.7%24 hm³View →

Updated 2026-10-28· 103% of month avg· D2

Great Salt Plains Lake

69.5%27 hm³View →

Updated 2026-10-29· 103% of month avg· D2

Arcadia Lake

104.8%36 hm³View →

Updated 2026-10-29· D2

Newt Graham LD18

74.7%22 hm³View →

Updated 2026-10-29· 97% of month avg· D2

Chouteau LD17

59.3%17 hm³View →

Updated 2026-10-29· 96% of month avg· D2

Heyburn Lake

low

23.7%6 hm³View →

Updated 2026-10-29· 101% of month avg· D1

Lake Humphreys

55.6%14 hm³View →

Updated 2026-10-28· 100% of month avg· D3

Birch Lake

78.7%19 hm³View →

Updated 2026-10-29· 98% of month avg· D1

Lake Overholser

105.0%20 hm³View →

Updated 2026-10-28· 123% of month avg· D2

Fort Supply Lake

74.8%13 hm³View →

Updated 2026-10-29· 99% of month avg· D2

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

⏳

4 major reservoirs — data sourcing in progress

Storage is monitored by the US Geological Survey (USGS NWIS) / the US Army Corps of Engineers (USACE CWMS) / the US Bureau of Reclamation (BOR RISE), but the live feed is currently stale — we are working to restore it. Known capacities: Lake Frederick (0.0 km³), Copan Lake (0.1 km³), Salina Pumpback (0.1 km³), Lake Altus (0.2 km³).

Lake Frederick

Sourcing

Capacity: 14 hm³⏳ Pending

Copan Lake

Sourcing

Capacity: 135 hm³⏳ Pending

Salina Pumpback

Sourcing

Capacity: 59 hm³⏳ Pending

Lake Altus

Sourcing

Capacity: 166 hm³⏳ Pending

About reservoirs in Oklahoma

As of October 29, 2026, the reservoirs we track across Oklahoma that report live levels hold roughly 11,262 hm³ of water — about 65.4% of their combined capacity. Taken together, Oklahoma's reservoirs are within their normal operating range.

Across the region, 3 reservoirs are at critically low levels and 3 are low. Lake Overholser is the fullest at 105.0%, while Pine Creek Lake is the lowest at 12.2%.

Over the most recent week on record, 4 reservoirs rose and 5 reservoirs fell across Oklahoma.

Storage figures for Oklahoma come from USGS · USACE · BOR · CDEC; the most recent reading is from October 29, 2026. Each reservoir below links to its own page with full history and seasonal context.

Oklahoma at a glance

Reservoirs tracked: 45
Average fill: 65.4%
Water stored: 11,262 hm³
Combined capacity: 17,212 hm³
At critically low levels: 3
Fullest: Lake Overholser (105.0%)
Lowest: Pine Creek Lake (12.2%)
Last updated: October 29, 2026

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