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Red basin · Region C · North Central
TWDB reading Jul 23, 2026
US Army Corps of Engineers SWT — Lake Texoma
Extrapolated from the past 60 days
Storage rose over the past 60 days, gaining about 0 acre-feet per day.
A straight-line extrapolation, not a forecast. It assumes the recent rate continues unchanged, ignoring seasonality, rainfall and managed releases — and drawdown normally slows as a reservoir falls. Treat it as a severity signal, not a date.
US Drought Monitor for Grayson County, Jul 21, 2026
Conditions in the county containing the dam. A reservoir is filled by a watershed that often reaches well beyond one county, and releases are managed, so local drought is context rather than an explanation of the level.
How today compares with 83 years of record for this date
At 100%, Lake Texoma is within its normal range for this date, higher than 55% of years on record.
Percentiles pool the ±3 days around today across every year on record, so “normal” means normal for this time of year. Conservation capacity is re-surveyed over time, so percent-full comparisons across decades are close but not exact.
Daily TWDB observations, with the normal range for each date
Normal range for the date (25th–75th percentile)Median year
This reservoir has no USGS lake gage, so readings come from the USACE CWMS system (DENI.Elev.Inst.30Minutes.0.Ccp-Rev). Validated against the TWDB daily elevation when the mapping was built.
CoCoRaHS observers within 60 km of the dam
Rain measured near the dam, not across the watershed. A reservoir is fed by a catchment that can reach hundreds of kilometres upstream, so heavy local rain does not necessarily mean inflow — and a rising lake often reflects rain far from here. Readings are volunteer observations taken once each morning.