Daily Reservoir and Pass-Thru Status Report
October 10, 2021
Reservoir Supply (AcFt); Stream Flow (AcFt); Evaporation (AcFt); Elevation (Ft); Rainfall (Inches); Temperature (°F); Gage Height (Ft MSL)
RESERVOIR STATISTICS
Effective June 24, 2017, updated total reservor capacities for Choke Canyon Reservoir (2012 TWDB Volumetric Survey) and
Lake Corpus Christi (2016 TWDB Volumetric Survey) are being reflected in the Daily Reservoir System and Pass-Thru Status Report
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined Lake Texana
Date Elevation Volume % Capacity Elevation Volume % Capacity Volume % Capacity Elevation Volume % Capacity
FULL 220.5 662,821 100% 94.0 256,339 100% 919,160 100% 44.0 161,085 100%
10/10/2021 203.5 310,778 46.9% 92.2 221,752 86.5% 532,530 57.9% 42.8 150,120 93.2%
10/09/2021 203.5 310,778 46.9% 92.2 221,752 86.5% 532,530 57.9% 42.8 150,120 93.2%
09/10/2021 203.9 317,346 47.9% 92.4 225,500 88.0% 542,846 59.1% 43.5 156,467 97.1%
10/10/2020 199.5 249,001 37.6% 87.8 146,723 57.2% 395,724 43.1% 43.8 159,229 98.8%
LAKE TEXANA WATER SUPPLY*
* The split between Non-Interruptible and Interruptible amounts are updated monthly, usually the first working day of the month, so they reflect the total and remaining amounts as of the end of the previous month
Date Daily Intake MTD Non-Interuptible Interruptible
September YTD Remaining September YTD Remaining
10/09/2021 139 1,275 3,474 16,318 15,122 0 12,000 0
COLORADO RIVER WATER SUPPLY (CRWT)
Date Daily
Intake
MTD YTD Daily Flow MTD Flow Date Time Gage Height
10/09/2021 0 0 9,327 1,431 21,718 10/10/2021 7:15 AM 8.43
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  10/09/2021 MTD YTD 10/09/2021 MTD YTD 10/09/2021 MTD YTD
Air Temp 86     86        
Evaporation 219 1,925 63,312 229 1,920 55,772 448 3,845 119,084
Rainfall 0.00 0.02 26.94 0.00 1.6 35.6      
Stream Flows
Gauging Station 10/09/2021 MTD
NTRT Nueces River at Three Rivers, Texas 86 1,328
NRTT Nueces River at Tilden, Texas 0 0
FRTT Frio River at Tilden, Texas 0 1
SMTT San Miguel Creek at Tilden, Texas 0 0
ARWT Atascosa River at Whitsett, Texas 16 570
CCR Release from Choke Canyon Reservoir 58 518
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 135 2,236
NCAT Nueces River at Calallen, Texas 15 4,219
RBP Rincon Bayou Pipeline 0 0
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 28 811
ESTUARY INFLOWS AND PASSTHRU REQUIREMENTS
Target Passthru Monthly Target 9,000   9,000
Salinity Relief Credit 0 Effective  
Credit / -Deficit From Previous Month Date Deficit Satisfied 10/01/2021 164
Return Flow Credit Effective   500
Required Passthru Monthly Target 9,000   811
Reservoir Inflow 811
Estuary Inflows (NCAT + RBP) 4,219
Passthru Surplus / -Deficit 4,073
Report Generated 10/10/2021 at 9:54:18 AM