Daily Reservoir and Pass-Thru Status Report
June 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%
06/29/2021 204.3 323,977 48.9% 91.4 206,995 80.8% 530,972 57.8% 43.9 160,156 99.4%
06/28/2021 204.2 322,313 48.6% 91.5 208,819 81.5% 531,132 57.8% 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%
06/29/2020 201.4 277,357 41.8% 89.5 173,834 67.8% 451,191 49.1% 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
May YTD Remaining May YTD Remaining
06/28/2021 117 3,908 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
06/28/2021 67 983 5,919 1,481 322,737 06/29/2021 7:15 AM 9.07
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  06/28/2021 MTD YTD 06/28/2021 MTD YTD 06/28/2021 MTD YTD
Air Temp 82     83        
Evaporation 165 8,117 31,951 127 7,363 28,979 292 15,480 60,930
Rainfall 0.02 2.15 17.04 0.77 3.59 18.18      
Stream Flows
Gauging Station 06/28/2021 MTD
NTRT Nueces River at Three Rivers, Texas 172 63,186
NRTT Nueces River at Tilden, Texas 5 21,215
FRTT Frio River at Tilden, Texas 6 34,992
SMTT San Miguel Creek at Tilden, Texas 13 7,763
ARWT Atascosa River at Whitsett, Texas 33 41,473
CCR Release from Choke Canyon Reservoir 58 1,399
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 719 15,429
NCAT Nueces River at Calallen, Texas 359 8,532
RBP Rincon Bayou Pipeline 229 5,567
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 134 104,541
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 104,541
Estuary Inflows (NCAT + RBP) 14,099
Passthru Surplus / -Deficit -7,782
Report Generated 6/29/2021 at 7:50:58 AM