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Surface Water Hydrology at White River Lake, Texas. Presented by Shane Walker May 3, 2005 CE 392K.2 – Hydrology. Motivation. Water Scarcity People Need Water. Ground Water. Surface Water. Outline. Background Info Model Development Geometry Evaporation & Usage Results.

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surface water hydrology at white river lake texas

Surface Water HydrologyatWhite River Lake, Texas

Presented by

Shane Walker

May 3, 2005

CE 392K.2 – Hydrology

motivation
Motivation
  • Water Scarcity
    • People Need Water

Ground Water

Surface Water

outline
Outline
  • Background Info
  • Model Development
    • Geometry
    • Evaporation & Usage
  • Results
background information

Background Information

Who, Where, What, When, Why, How

slide5
Who?
  • White River Municipal Water District
    • Established in 1967
    • Post, Crosbyton, Ralls, Spur, & White River
    • Services < 10,000 people
slide6
Who?
  • White River Water Treatment Plant
    • Provides “Superior” drinking water to the MWD
    • Source: surface water from White River Lake
    • Average Annual effluent: 1.7 MGD
    • Maximum effluent: 4.5 MGD
slide7
Who?
  • White River Lake
    • Constructed: 1962-1964
    • Inflow: White River (intermittent)
    • Full Elevation: 2372 ft
    • Full Depth: 45 ft
    • Full Volume: 31,846 acre-ft
    • Full Area: 2.5 sq. mi.
where
Where?
  • White River Lake
    • ~ 40 mi. E of Lubbock
slide9
What?
  • Software program to predict the usable life of the Lake
  • Dependent upon evaporation and usage
slide10
Why?
  • Lake Depletion – rationing vs. alternative source?
slide11
How?
  • develop mathematical model of the geometry of the lake
  • values for evaporation and usage
  • develop software to predict usable life
model development

Model Development

Geometry

Evaporation & Usage

volume depth regression

Volume/Depth Regression

Mathematical Model

Of

Lake Geometry

slide21
Data
  • Volumetric Survey of White River Lake
    • June 30, 1993
    • prepared by the Hydrographic Survey Group
    • published by the Texas Water Developement Board
  • Sonar/Sounding
    • Surface area vs. Elevation @ 0.1 ft interval
analysis
Analysis
  • Input data into Microsoft Excel
  • Used built-in regression tools
  • Determined accuracy of correlation by R2
results
Results
  • Determined best fit as Power function
  • V(D) = 5.3412 D2.2933
  • D(V) = 0.4827 V0.4358
  • (R2 ~0.999) – Good considering siltation
evaporation usage

Evaporation & Usage

Water Consumption Data

domestic industrial usage
Domestic/Industrial Usage
  • Industrial
    • Oil Companies flood oil wells
      • Decreasing
  • Compare Domestic versus Industrial
assumptions
Assumptions
  • No Infiltration

(clay soils)

  • No precip or inflow (conservative)
lake level model

Lake Level Model

Evaporation & Usage

lake level model1
Lake Level Model

Start Elevation

– Evap

– Pumpage

= Final Elevation

alternative scenarios
Alternative Scenarios
  • Case A – No change (D = 0)
  • Case B – Eliminate Industrial Usage
  • Case C – Limit plant flow
  • Case D – Eliminate all usage
lake level model2
Lake Level Model
  • Input Data
    • Date
    • Full elevation
    • Current surface elevation
    • Lowest intake elevation
    • Lake bottom elevation
benefits
Benefits
  • Educate planners and managers
  • WRMWD
    • Industrial will probably not be eliminated
    • Simulate rationing by assuming winter usage
  • Applied to any reservoir (water balance)
model improvements
Model Improvements
  • Change USDA evap to TWDB evap
  • Add Precipitation into the model
  • “Calibrate” the model to simulate dry spells
conclusions
Conclusions
  • Consider sustainable alternative supply