Overview of Desired Future Condition (DFC) Analysis Tool

Outline

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● DFCs

● DFC Tool

○ Highlights

○ How it Works

○ Trend Calculation Method

● Live Demo

Desired Future Condition (DFC)

2010 2060

100 Feet

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● Importance of a DFC

○ Management goal

○ Means to gauge a district’s

efforts

● What is a DFC

○ Specified future time

○ Quantifiable condition of

groundwater resources

How do we track and calculate water level trends relative to the DFC?

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DFC Analysis Tool● Built to analyze water levels as a

means to calculate current water level trends to compare to DFCs

● Interactive web based tool

● Automated

● Visual

● Modular

● Still under development

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How the Tool Works

Local Script

Gathering and

Processing

Datasets

TWDB GCD

Cloud

DFC Tool pulls in the

water level data and

performs the calculations

and visualizes the data

App displayed on

web browser on

user's computer

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Current Trend Calculation Method

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● Calculate the water level slope

● Take the average of all the slopes

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Average Water Level Slope Method

Slope = -22 ft/yr Slope = -10 ft/yr

Slope = -40 ft/yr Slope = 1 ft/yr

Current Trend =

(-22 + -10 + -40 + 1) / 4

= -18 ft/yr

DFC Tool Demo

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• Hypothetical situation

• Water levels have been purposely

altered to not reflect real world

conditions

• DFC values have been changed

• Demonstration of the tools capabilities

• DFC Tool

Summary

●Tool provides a good platform from which we can begin

addressing the question of “are we meeting the DFCs”

●Need to evaluate trend calculation methods further

●Evolving tool

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QUESTIONS

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Average Spatial Water Level Difference

● Spatial interpolation method to estimate water levels

● Average the water levels

● Compare average water levels back to initial water level at beginning of DFC○ Difference can tell us if water levels have increased or decreased with time

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Average WL = 450 Initial Avg.

WL = 470

Example Avg.

WL = 450

DFC Line

Water Levels in 2014