Daily Reservoir and Pass-Thru Status Report
May 14, 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%
05/14/2021 197.5 221,467 33.4% 85.7 116,400 45.4% 337,867 36.8% 44.0 161,085 100.0%
05/13/2021 197.4 220,142 33.2% 85.8 117,754 45.9% 337,896 36.8% 44.0 161,085 100.0%
04/14/2021 197.2 217,506 32.8% 85.4 112,393 43.8% 329,899 35.9% 42.5 147,442 91.5%
05/14/2020 201.7 282,012 42.5% 89.4 172,173 67.2% 454,185 49.4% 43.3 154,639 96.0%
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
05/13/2021 69 1,490 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
05/13/2021 67 247 4,690 1,320 120,958 05/14/2021 7:15 AM 8.71
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  05/13/2021 MTD YTD 05/13/2021 MTD YTD 05/13/2021 MTD YTD
Air Temp 78     77        
Evaporation 240 3,158 19,787 173 2,706 18,230 413 5,864 38,017
Rainfall 0.00 1.09 4.04 0.00 2.34 6.23      
Stream Flows
Gauging Station 05/13/2021 MTD
NTRT Nueces River at Three Rivers, Texas 98 8,005
NRTT Nueces River at Tilden, Texas 0 0
FRTT Frio River at Tilden, Texas 369 3,565
SMTT San Miguel Creek at Tilden, Texas 170 5,991
ARWT Atascosa River at Whitsett, Texas 78 8,131
CCR Release from Choke Canyon Reservoir 58 748
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 54 2,020
NCAT Nueces River at Calallen, Texas 518 930
RBP Rincon Bayou Pipeline 0 0
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 580 16,812
ESTUARY INFLOWS AND PASSTHRU REQUIREMENTS
Target Passthru Monthly Target 1,200   1,200
Salinity Relief Credit 0 Effective  
Credit / -Deficit From Previous Month Date Deficit Satisfied   85
Return Flow Credit Effective   500
Required Passthru Monthly Target 1,200   1,200
Reservoir Inflow 16,812
Estuary Inflows (NCAT + RBP) 930
Passthru Surplus / -Deficit 315
Report Generated 5/14/2021 at 9:08:56 AM