Daily Reservoir and Pass-Thru Status Report
August 16, 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%
08/16/2021 204.5 327,318 49.4% 93.0 236,887 92.4% 564,205 61.4% 44.0 161,085 100.0%
08/15/2021 204.6 328,994 49.6% 93.0 236,887 92.4% 565,881 61.6% 43.9 160,156 99.4%
07/16/2021 204.9 334,048 50.4% 93.1 238,806 93.2% 572,854 62.3% 43.9 160,156 99.4%
08/16/2020 200.2 259,206 39.1% 88.5 157,605 61.5% 416,811 45.3% 43.7 158,306 98.3%
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
July YTD Remaining July YTD Remaining
08/15/2021 93 1,711 3,013 9,857 21,583 0 12,000 0
COLORADO RIVER WATER SUPPLY (CRWT)
Date Daily
Intake
MTD YTD Daily Flow MTD Flow Date Time Gage Height
08/15/2021 54 436 7,421 919 26,456 08/16/2021 7:15 AM 8.01
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  08/15/2021 MTD YTD 08/15/2021 MTD YTD 08/15/2021 MTD YTD
Air Temp 94     93        
Evaporation 332 4,975 45,584 234 4,285 41,459 566 9,260 87,043
Rainfall 0.00 0.68 24.01 0.22 1.14 30.08      
Stream Flows
Gauging Station 08/15/2021 MTD
NTRT Nueces River at Three Rivers, Texas 899 8,965
NRTT Nueces River at Tilden, Texas 971 2,458
FRTT Frio River at Tilden, Texas 0 185
SMTT San Miguel Creek at Tilden, Texas 1 1,456
ARWT Atascosa River at Whitsett, Texas 35 3,631
CCR Release from Choke Canyon Reservoir 58 863
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 208 2,592
NCAT Nueces River at Calallen, Texas 0 228
RBP Rincon Bayou Pipeline 0 0
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 843 9,743
ESTUARY INFLOWS AND PASSTHRU REQUIREMENTS
Target Passthru Monthly Target 5,000   5,000
Salinity Relief Credit 0 Effective  
Credit / -Deficit From Previous Month Date Deficit Satisfied   2,500
Return Flow Credit Effective 08/01/2021 500
Required Passthru Monthly Target 5,000   5,000
Reservoir Inflow 9,743
Estuary Inflows (NCAT + RBP) 228
Passthru Surplus / -Deficit -1,772
Report Generated 9/1/2021 at 4:37:11 PM