Daily Reservoir and Pass-Thru Status Report
May 29, 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%
05/29/2021 201.7 282,012 42.5% 88.4 156,028 60.9% 438,040 47.7% 44.0 161,085 100.0%
05/28/2021 201.7 282,012 42.5% 88.5 157,605 61.5% 439,617 47.8% 43.9 160,156 99.4%
04/29/2021 196.9 213,589 32.2% 85.2 109,768 42.8% 323,357 35.2% 42.3 145,671 90.4%
05/29/2020 201.9 285,141 43.0% 89.7 177,182 69.1% 462,323 50.3% 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
05/28/2021 137 3,274 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
05/28/2021 0 494 4,937 12,823 363,303 05/29/2021 7:15 AM 17.29
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  05/28/2021 MTD YTD 05/28/2021 MTD YTD 05/28/2021 MTD YTD
Air Temp 88     88        
Evaporation 291 6,550 23,179 211 5,585 21,109 502 12,135 44,288
Rainfall 0.00 9.52 12.47 0.00 8.45 12.34      
Stream Flows
Gauging Station 05/28/2021 MTD
NTRT Nueces River at Three Rivers, Texas 212 34,208
NRTT Nueces River at Tilden, Texas 0 2,440
FRTT Frio River at Tilden, Texas 28 39,887
SMTT San Miguel Creek at Tilden, Texas 5 11,552
ARWT Atascosa River at Whitsett, Texas 48 21,495
CCR Release from Choke Canyon Reservoir 58 1,483
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 138 5,034
NCAT Nueces River at Calallen, Texas 33 9,153
RBP Rincon Bayou Pipeline 0 1,370
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 188 84,164
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 84,164
Estuary Inflows (NCAT + RBP) 10,523
Passthru Surplus / -Deficit 557
Report Generated 5/29/2021 at 7:54:42 AM