Task 3 Institutional Incentives for Efficient Water Use
Provide to improve district water management and modernization Objectives technical assistance, technical assistance, applied research, and applied research, and educational programs educational programs
Vision... To build a GIS-based decision support system for total irrigation district management Such 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 Reservoir Storage Field demands seepage spills ET Control gate canal River Pump Field demands Rain Multiplied 100 plus...
Aerial Photo
Conveyance system
Fields
Crops
Gates
Work Plan 1.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 GPS ArcView 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