Storage from official US gauges (USGS, USACE, Bureau of Reclamation, CDEC). Fill % uses design capacity from the National Inventory of Dams where available; a few sites without a match fall back to the 5-year maximum.

Major reservoirs — data pending

⏳

Diversion Lake — 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: Diversion Lake (0.0 km³).

Diversion Lake

Sourcing

Capacity: 5 hm³⏳ Pending

About reservoirs in Texas

As of September 11, 2026, the reservoirs we track across Texas that report live levels hold roughly 11,390 hm³ of water — about 65.3% of their combined capacity. Taken together, Texas's reservoirs are within their normal operating range.

Across the region, 5 reservoirs are at critically low levels and 6 are low. Lake Conroe is the fullest at 96.0%, while Addicks Reservoir is the lowest at 0.0%.

Over the most recent week on record, 1 reservoir rose and 2 reservoirs fell across Texas.

Storage figures for Texas come from USGS · USACE · BOR · CDEC; the most recent reading is from September 11, 2026. Each reservoir below links to its own page with full history and seasonal context.

Texas at a glance

Reservoirs tracked: 28
Average fill: 65.3%
Water stored: 11,390 hm³
Combined capacity: 17,448 hm³
At critically low levels: 5
Fullest: Lake Conroe (96.0%)
Lowest: Addicks Reservoir (0.0%)
Last updated: September 11, 2026

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