Daily Reservoir and Pass-Thru Status Report
June 28, 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%
06/28/2021 204.2 322,313 48.6% 91.5 208,819 81.5% 531,132 57.8% 44.0 161,085 100.0%
06/27/2021 204.3 323,977 48.9% 91.5 208,819 81.5% 532,796 58.0% 43.9 160,156 99.4%
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%
06/28/2020 201.4 277,357 41.8% 89.5 173,834 67.8% 451,191 49.1% 43.8 159,229 98.8%
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
06/27/2021 116 3,791 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
06/27/2021 68 916 5,853 1,471 321,256 06/28/2021 7:15 AM 9.03
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  06/27/2021 MTD YTD 06/27/2021 MTD YTD 06/27/2021 MTD YTD
Air Temp 88     87        
Evaporation 281 7,952 31,786 149 7,236 28,852 430 15,188 60,638
Rainfall 0.00 2.13 17.02 0.05 2.82 17.41      
Stream Flows
Gauging Station 06/27/2021 MTD
NTRT Nueces River at Three Rivers, Texas 179 63,014
NRTT Nueces River at Tilden, Texas 6 21,210
FRTT Frio River at Tilden, Texas 5 34,985
SMTT San Miguel Creek at Tilden, Texas 16 7,750
ARWT Atascosa River at Whitsett, Texas 33 41,440
CCR Release from Choke Canyon Reservoir 58 1,342
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 715 14,711
NCAT Nueces River at Calallen, Texas 363 8,173
RBP Rincon Bayou Pipeline 227 5,338
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 142 104,407
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 104,407
Estuary Inflows (NCAT + RBP) 13,511
Passthru Surplus / -Deficit -8,370
Report Generated 6/28/2021 at 9:10:10 AM