Daily Reservoir and Pass-Thru Status Report
May 24, 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%
05/24/2021 201.7 282,012 42.5% 88.4 156,028 60.9% 438,040 47.7% 44.0 161,085 100.0%
05/23/2021 201.5 278,904 42.1% 88.4 156,028 60.9% 434,932 47.3% 44.0 161,085 100.0%
04/24/2021 197.1 216,196 32.6% 85.2 109,768 42.8% 325,964 35.5% 42.4 146,555 91.0%
05/24/2020 201.8 283,575 42.8% 89.4 172,173 67.2% 455,748 49.6% 43.9 160,156 99.4%
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
April YTD Remaining April YTD Remaining
05/23/2021 138 2,587 2,289 6,497 24,943 0 4,500 7,500
COLORADO RIVER WATER SUPPLY (CRWT)
Date Daily
Intake
MTD YTD Daily Flow MTD Flow Date Time Gage Height
05/23/2021 0 494 4,937 9,607 242,932 05/24/2021 7:15 AM 14.47
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  05/23/2021 MTD YTD 05/23/2021 MTD YTD 05/23/2021 MTD YTD
Air Temp 79     83        
Evaporation 82 5,178 21,807 211 4,425 19,949 293 9,603 41,756
Rainfall 0.04 8.33 11.28 0.21 8.44 12.33      
Stream Flows
Gauging Station 05/23/2021 MTD
NTRT Nueces River at Three Rivers, Texas 689 32,443
NRTT Nueces River at Tilden, Texas 55 2,393
FRTT Frio River at Tilden, Texas 1,790 38,779
SMTT San Miguel Creek at Tilden, Texas 69 11,456
ARWT Atascosa River at Whitsett, Texas 174 20,886
CCR Release from Choke Canyon Reservoir 58 1,195
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 166 4,353
NCAT Nueces River at Calallen, Texas 110 8,667
RBP Rincon Bayou Pipeline 148 1,054
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 2,491 81,483
ESTUARY INFLOWS AND PASSTHRU REQUIREMENTS
Target Passthru Monthly Target 10,551   10,551
Salinity Relief Credit 0 Effective  
Credit / -Deficit From Previous Month Date Deficit Satisfied   85
Return Flow Credit Effective   500
Required Passthru Monthly Target 10,551   10,551
Reservoir Inflow 81,483
Estuary Inflows (NCAT + RBP) 9,721
Passthru Surplus / -Deficit -245
Report Generated 5/24/2021 at 9:05:44 AM