Task 3Task 3

Institutional Incentives for Institutional Incentives for Efficient Water UseEfficient Water Use

Provide

to improve district water management and modernization

ObjectivesObjectives

• technical assistance,technical assistance,• applied research, andapplied research, and• educational programseducational programs

Vision...

To build a GIS-based

decision support system

for total irrigation district managementSuch as:• scheduling field irrigation and water delivery• distribution network management• regional water conservation planning

GIS-based DMS

Weather Data

Crop Modeling

Routing Models

Irrigation Scheduling

Water Balance Equation: Change in storage + inflows - outflows +Precipitation - Et - Infiltration

Irrigation District Water Balance Equation:

Field demands

ReservoirStorage Field demands

seepageseepage seepage

spills spills

ET ETET

Controlgatecanal canal canal

River Pump

Field demands

Rain

Multiplied 100 plus...

Aerial Photo

Conveyance system

Fields

Crops

Gates

Work Plan1. Provide education and research

programs on improved district water management and modernization

2. Evaluate emerging technologies for automatic gate and flow control, canal lining, etc.

3. Investigate use of remote sensing, satellite and aerial photography.

Work Plan

4. Develop and implement a water demand forecasting system

5. Establish training and certification programs for canal riders

6. Continue to develop and implement GIS-based District Management System (DMS).

Focus for 2002• Continue District Assistance/Training• Thermal Imaging• District Management System

Development– GIS-Based Distribution Network Model– Web-Based GIS Products and Services for

Districts– Verification of an Irrigation Demand

Forecasting Model

District Assistance

Continued support of districts in GIS mapping and database development and implementation

District Assistance (cont.)

In-District Support and Training (by mutual

agreement)Workshops

Hands-on GPSArcView 8.1

District Assistance (cont.)

Evaluating canal lining alternatives to determine water savings and cost effectiveness.

a)San Benito – (on-going) b)2002

– Edinburg– Harlingen

Thermal Imaging (Remote Sensing)

• to rapidly detect leaks in canals and underground pipelines

• measures surface temperature differences in surrounding areas of canals

Thermal Imaging: Work Done

• Flyover in August 2001 of United and San Benito Irrigation Districts

• Processed and enhanced images

• Selected canal segments for field verification

Thermal Imaging: What is Next?

• Field reconnaissance of selected segments for verification

• Flyovers in Summer & Winter 2002

• Using an improved multi-band imaging sensor

Distribution Network Model

Existing models do not work due to:

• Small hydraulic gradient• Combination of open channels

and pipelines• Need GIS compatibility

Distribution Network Model

Possible Uses:• Optimize management for

distribution networks• Evaluate need for rehabilitation• Determine “head”

improvement

•Create a new distribution network model with OOP (Object-Oriented Programming) in C++ and ArcView

•GIS Interface with automatic gate and pump control algorithms

GIS-Based Distribution Network Model

Web-Based GIS Products and Services

Develop prototype systems:•Allow growers to access their

accounts on the web to verify field boundaries and other information

• Integrating district communication and data management

Irrigation Demand Forecasting Model

•Collecting crop production data from 6 fields of furrow and center pivot irrigation for model verification

•Enhance model capabilities