Daily Reservoir and Pass-Thru Status Report
June 18, 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%
06/18/2021 204.5 327,318 49.4% 91.9 216,174 84.3% 543,492 59.1% 44.0 161,085 100.0%
06/17/2021 204.5 327,318 49.4% 92.0 218,027 85.1% 545,345 59.3% 44.0 161,085 100.0%
05/18/2021 198.9 240,518 36.3% 86.7 130,369 50.9% 370,887 40.4% 44.0 161,085 100.0%
06/18/2020 201.6 280,455 42.3% 89.6 175,504 68.5% 455,959 49.6% 43.4 155,551 96.6%
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
May YTD Remaining May YTD Remaining
06/17/2021 121 2,613 0 6,497 24,943 3,684 8,184 3,816
COLORADO RIVER WATER SUPPLY (CRWT)
Date Daily
Intake
MTD YTD Daily Flow MTD Flow Date Time Gage Height
06/17/2021 68 240 5,177 2,481 299,993 06/18/2021 7:15 AM 10.06
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  06/17/2021 MTD YTD 06/17/2021 MTD YTD 06/17/2021 MTD YTD
Air Temp 93     92        
Evaporation 361 4,865 28,699 140 4,114 25,730 501 8,979 54,429
Rainfall 0.00 1.61 16.5 0.00 2.49 17.08      
Stream Flows
Gauging Station 06/17/2021 MTD
NTRT Nueces River at Three Rivers, Texas 429 60,614
NRTT Nueces River at Tilden, Texas 123 20,803
FRTT Frio River at Tilden, Texas 34 34,859
SMTT San Miguel Creek at Tilden, Texas 7 7,621
ARWT Atascosa River at Whitsett, Texas 70 40,958
CCR Release from Choke Canyon Reservoir 58 766
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 689 7,660
NCAT Nueces River at Calallen, Texas 268 4,808
RBP Rincon Bayou Pipeline 235 3,042
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 411 102,328
ESTUARY INFLOWS AND PASSTHRU REQUIREMENTS
Target Passthru Monthly Target 23,000   23,000
Salinity Relief Credit 0 Effective  
Credit / -Deficit From Previous Month Date Deficit Satisfied   619
Return Flow Credit Effective   500
Required Passthru Monthly Target 23,000   23,000
Reservoir Inflow 102,328
Estuary Inflows (NCAT + RBP) 7,850
Passthru Surplus / -Deficit -14,031
Report Generated 6/18/2021 at 8:40:15 AM