Online Products of the Hydraulic Investigations and Laboratory Services Group's Water Conservation ProgramThe performance of existing agricultural irrigation systems can be improved through more responsive management and control. These changes require improvements in auxiliary functions, such as flow measurement and delivery scheduling. The performance of enhanced systems can be characterized by both efficiency (water conservation) and effectiveness (the ability of the system to respond to the irrigator's demands for water). Automated systems can be used to optimize the efficiency and effectiveness of a water delivery system.
The Bureau of Reclamation (Reclamation) has developed a number of large automated canal systems, such as the Central Arizona Project. However, the vast majority of canal systems that could benefit from these technologies are relatively small. In the past, irrigators have generally considered automated measurement and control to be too complicated and expensive, but the recent advent of economical, user friendly computer hardware and software has changed that picture.
Projects typically adopt a phased approach to the new technologies, starting with remote monitoring and then adding remote control and local automatic control. The system can generally be expanded to an integrated system that is controlled on a system-wide basis.
- Water Conservation
- Canal Modernization
- PIDSim - simulation of using the PID algorithm for water level or flow rate control
- Gate Automation Upgrade - a solar powered gate operator A simple, low cost gate control system for remote sites is described. This article was first published in the Water Operation and Maintenance Bulletin No. 172, June 1995.
- Remote Control of a Solar-Powered Inflatable-Gate Check Structure, A canal check structure on the Strawberry Highline Canal near Payson, Utah was recently rehabilitated using a solar-powered inflatable gate and upstream water level controller based on a PID (proportional-integral-derivative) algorithm. This article appeared in Water Operation and Maintenance Bulletin No. 171, March 1995.
- Water Measurement
- Workshops - schedule of upcoming classes
- WinFlume - software for the design and calibration of long-throated flumes and broad-crested weirs
- RADGAT - software for calibrating canal radial gates for flow measurement
- numerical model of parshall flume
- The online Water Measurement Manual - The online version of the standard water measurement reference for the Bureau of Reclamation and the U.S. Dept. of Agriculture.
- Water Measurement with Flumes and Weirs - Reference text for design and calibration of long-throated flumes and broad-crested weirs, and user's manual for the WinFlume software.
- Canal Flow Measurement Using a Bubbler Water Level Sensor - Grand Valley Project near Grand Junction, Colorado.
- Elbow Flow Meters - A low-cost flow measurement alternative
- Numerical (CFD) modeling of free and submerged flow in Parshall Flumes
- Instrumentation for water measurement and canal automation
- Interesting Links from Other Sources
- Internet Data Reporting from the Field - by Dave Gunderson, Electronics Technician, Hoover Dam, AZ.
- Using a Sutron 8210 for Remote Pump Control - by Dave Gunderson, Electronics Technician, Hoover Dam, AZ.