Daily Reservoir and Pass-Thru Status Report
May 30, 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%
05/30/2021 201.7 282,012 42.5% 88.5 157,605 61.5% 439,617 47.8% 44.0 161,085 100.0%
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%
04/30/2021 196.9 213,589 32.2% 85.2 109,768 42.8% 323,357 35.2% 42.4 146,555 91.0%
05/30/2020 201.9 285,141 43.0% 89.8 178,868 69.8% 464,009 50.5% 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
05/29/2021 136 3,410 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
05/29/2021 0 494 4,937 11,473 374,776 05/30/2021 7:15 AM 14.46
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  05/29/2021 MTD YTD 05/29/2021 MTD YTD 05/29/2021 MTD YTD
Air Temp 82     81        
Evaporation 200 6,750 23,379 110 5,695 21,219 310 12,445 44,598
Rainfall 0.57 10.09 13.04 0.21 8.66 12.55      
Stream Flows
Gauging Station 05/29/2021 MTD
NTRT Nueces River at Three Rivers, Texas 228 34,436
NRTT Nueces River at Tilden, Texas 0 2,440
FRTT Frio River at Tilden, Texas 19 39,906
SMTT San Miguel Creek at Tilden, Texas 4 11,555
ARWT Atascosa River at Whitsett, Texas 73 21,567
CCR Release from Choke Canyon Reservoir 58 1,540
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 135 5,169
NCAT Nueces River at Calallen, Texas 23 9,177
RBP Rincon Bayou Pipeline 0 1,370
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 193 84,357
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 84,357
Estuary Inflows (NCAT + RBP) 10,546
Passthru Surplus / -Deficit 580
Report Generated 5/30/2021 at 9:36:06 AM