Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- Irrigation (6)
- Energy (5)
- Efficiency (4)
- Flow measurement (2)
- Hydroacoustic flow meter (2)
-
- Index velocity rating (2)
- Non-standard structure (2)
- Canal (1)
- Drip irrigation (1)
- Drought (1)
- Emitters (1)
- Evaporation; Evapotranspiration; Lysimeters; Irrigation scheduling; Soil water; Transpiration. (1)
- Flow rate (1)
- Leaching (1)
- Model accuracy; Evapotranspiration; Irrigation districts; Project evaluation; Crops; Water balance (1)
- Optimization models; Canals; Open channels; Control structures; Hydraulic structures (1)
- Salinity (1)
- Salt (1)
- Soil (1)
Articles 1 - 14 of 14
Full-Text Articles in Engineering
Leaching Of Accumulated Soil Salinity Under Drip Irrigation, Charles M. Burt, Brett Isbell
Leaching Of Accumulated Soil Salinity Under Drip Irrigation, Charles M. Burt, Brett Isbell
BioResource and Agricultural Engineering
Conducted a reclamation leaching experiment in a drip-irrigated pistachio orchard south of Huron, California, during the winter of 2002-2003. The study was conducted to quantify the leaching water required to remove salts from the effective root zone of trees. This experiment tested a new reclamation leaching technique: multiple lines of low-flow drip tape were used to apply water to the area of salinity accumulation along a tree row. This new technique allows water to be applied where there is salt accumulation along the tree row, as opposed to putting water on the entire area of the field. Since reclamation leaching …
Non-Standard Structure Flow Measurement Evaluation Using The Flow Rate Indexing Procedure – Qip, Stuart Styles
Non-Standard Structure Flow Measurement Evaluation Using The Flow Rate Indexing Procedure – Qip, Stuart Styles
BioResource and Agricultural Engineering
This paper summarizes the results of a performance evaluation using advanced hydroacoustic rating techniques in irrigation canal systems. Standardized field-tested procedures and technical specifications for index velocity ratings have been developed for rating measurement locations using hydroacoustic flow meters. Water managers and users of advanced electronic flow measuring devices can improve the cost effectiveness, accuracy, and quality control of discharge records, even at sites with complex flow conditions, by observing these recommended guidelines.
Non-Standard Structure Flow Measurement Evaluation Using The Flow Rate Indexing Procedure - Qip, Stuart W. Styles
Non-Standard Structure Flow Measurement Evaluation Using The Flow Rate Indexing Procedure - Qip, Stuart W. Styles
BioResource and Agricultural Engineering
This paper summarizes the results of a performance evaluation using advanced hydroacoustic rating techniques in irrigation canal systems. Standardized field-tested procedures and technical specifications for index velocity ratings have been developed for rating measurement locations using hydroacoustic flow meters. Water managers and users of advanced electronic flow measuring devices can improve the cost effectiveness, accuracy, and quality control of discharge records, even at sites with complex flow conditions, by observing these recommended guidelines.
Multiple-Model Optimization Of Proportional Integral Controllers On Canals, P. J. Van Overloop, J. Schuurmans, R. Brouwer, Charles M. Burt
Multiple-Model Optimization Of Proportional Integral Controllers On Canals, P. J. Van Overloop, J. Schuurmans, R. Brouwer, Charles M. Burt
BioResource and Agricultural Engineering
Canals or open channels that convey water often consist of pools in series separated by control structures. Successful implementation of water-level control with these structures using decentralized proportional integral (PI) controllers depends heavily on the tuning of the control parameters. These parameters are hard to determine due to the interactions between the pools and the varying flow conditions in the canal. This paper presents a procedure for tuning any linear controller (including decentralized PI controllers) that guarantees stability of the controlled canal. It minimizes a cost function that weights the water-level deviations from the target level against control efforts at …
California Energy Commission: Estimated Energy Requirements Under Drought Conditions, Charles M. Burt, Daniel J. Howes
California Energy Commission: Estimated Energy Requirements Under Drought Conditions, Charles M. Burt, Daniel J. Howes
BioResource and Agricultural Engineering
This study is a continuation of a previous study conducted by ITRC for the CEC summarized in a report titled California Agricultural Water Energy Requirements (ITRC Report No. 03-006), which focused on determining a baseline energy requirement for agricultural sectors as well as analyzing potential future trends in the agricultural water community to predict future energy requirements. This study utilized the data and model developed in the previous analysis in order to quantify the impact of drought conditions on energy requirements of the agricultural water sector.
Cec Agricultural Peak Load Reduction Program - Water Agencies Final Report, Charles M. Burt, Daniel J. Howes
Cec Agricultural Peak Load Reduction Program - Water Agencies Final Report, Charles M. Burt, Daniel J. Howes
BioResource and Agricultural Engineering
During the winter of 2000-2001, California experienced a severe imbalance in electricity supply and demand that resulted in blackouts and brownouts. The state legislature initiated a number of emergency programs, one of which was Senate Bill 5x. The primary goal of SB 5x is to reduce peak period electric demand throughout California. The California Energy Commission (CEC), acting under authority of Section 5(b) of the legislation, developed the “Agricultural Peak Load Demand Program”. The program was funded in early June 2001, and the Irrigation Training and Research Center (ITRC) of California Polytechnic State University (Cal Poly), San Luis Obispo was …
Comparison Of Measured And Fao-56 Modeled Evaporation From Bare Soil, Andrew J. Mutziger, Charles M. Burt, Daniel J. Howes, Richard G. Allen
Comparison Of Measured And Fao-56 Modeled Evaporation From Bare Soil, Andrew J. Mutziger, Charles M. Burt, Daniel J. Howes, Richard G. Allen
BioResource and Agricultural Engineering
This paper evaluates how well the FAO-56 style soil water evaporation model simulates measurements of evaporation (E) from bare soil. Seven data sets were identified from the literature and in all but one case, the individuals who took the measurements were contacted and they provided the writers with specific weather and soils data for model input. Missing weather and soils data were obtained from online sources or from the National Climatic Data Center. Simulations for three possible variations of soil data were completed and compared. The measured and the FAO-56 simulated E/ETo and cumulative evaporation trends and …
Evaporation Research: Review And Interpretation, Charles M. Burt, Andrew J. Mutziger, Robert G. Allen, Terry A. Howell
Evaporation Research: Review And Interpretation, Charles M. Burt, Andrew J. Mutziger, Robert G. Allen, Terry A. Howell
BioResource and Agricultural Engineering
Literature regarding evaporation from soil, wet plant surfaces, and sprinkler droplets was examined, normalized, and interpreted. Much of the evaporation literature is difficult to compare and interpret; this paper offers comparisons and discussions of various findings by others as well as by the writers. Techniques of measuring and estimating evaporation from irrigation and rainfall are discussed. The partitioning between increased evaporation and decreased transpiration from a variety of research is quantified. Factors that impact the various forms of evaporation are listed and quantified. This review and summary will provide practitioners and researchers with theoretical and practical guidance on measurement techniques …
Prediction Accuracy For Projectwide Evapotranspiration Using Crop Coefficients And Reference Evapotranspiration, Richard G. Allen, Albert J. Clemmens, Charles M. Burt, Ken Solomon, Tim O'Halloran
Prediction Accuracy For Projectwide Evapotranspiration Using Crop Coefficients And Reference Evapotranspiration, Richard G. Allen, Albert J. Clemmens, Charles M. Burt, Ken Solomon, Tim O'Halloran
BioResource and Agricultural Engineering
The Imperial Irrigation District is a large irrigation project in the western United States having a unique hydrogeologic structure such that only small amounts of deep percolation leave the project directly as subsurface flows. This structure is conducive to relatively accurate application of a surface water balance to the district, enabling the determination of crop evapotranspiration (ETc) as a residual of inflows and outflows. The ability to calculate ETc from discharge measurements provides the opportunity to assess the accuracy and consistency of an independently applied crop coefficient—reference evapotranspiration (Kc ET0) procedure integrated over …
Canal Flow Rate Measurement Guidelines – Itrc 2005: Hydroacoustic Meters, Charles M. Burt, Stuart Styles
Canal Flow Rate Measurement Guidelines – Itrc 2005: Hydroacoustic Meters, Charles M. Burt, Stuart Styles
BioResource and Agricultural Engineering
A Hydroacoustic flow meter provides remote velocity sampling and integrated flow measurement based on the physical principle called the Doppler shift. The sensors can either project a continuous or pulsed beam of acoustic signals at angles above the horizontal position of the sensor. Flow velocity is calculated by averaging the measured variations in sound frequency reflected back from particles in the water. Depth is measured with a ceramic-based pressure transducer integrally mounted in a surface mount velocity sensor and the device calculates the flow rate.
California Energy Commission Agricultural Peak Load Reduction Program Case Study: Berrenda Mesa Wsd, Charles M. Burt, Daniel J. Howes
California Energy Commission Agricultural Peak Load Reduction Program Case Study: Berrenda Mesa Wsd, Charles M. Burt, Daniel J. Howes
BioResource and Agricultural Engineering
Berrenda Mesa Water Storage District (BMWSD) is located in the southern part of the San Joaquin Valley near Bakersfield. The district receives water from the State Water Project – California Aqueduct.
California Energy Commission Agricultural Peak Load Reduction Program Case Study: Orange Cove Id, Charles M. Burt, Daniel J. Howes
California Energy Commission Agricultural Peak Load Reduction Program Case Study: Orange Cove Id, Charles M. Burt, Daniel J. Howes
BioResource and Agricultural Engineering
The Orange Cove Irrigation District is located in Fresno and Tulare Counties, approximately 30 miles southeast of Fresno and 20 miles north of the City of Visalia. The Friant-Kern Canal is the district’s main source of water to supply 28,000 acres of farmland.
California Energy Commission Agricultural Peak Load Reduction Program Case Study: North Kern Wsd, Charles M. Burt, Daniel J. Howes
California Energy Commission Agricultural Peak Load Reduction Program Case Study: North Kern Wsd, Charles M. Burt, Daniel J. Howes
BioResource and Agricultural Engineering
The North Kern Water Storage District (NKWSD) is located just north of Bakersfield in Kern County and encompasses nearly 60,000 acres. The district receives water from the Kern River as well as groundwater pumping to supply its users.
California Energy Commission Agricultural Peak Load Reduction Program Case Study: Kaweah River Power Authority And Tulare Id, Charles M. Burt
California Energy Commission Agricultural Peak Load Reduction Program Case Study: Kaweah River Power Authority And Tulare Id, Charles M. Burt
BioResource and Agricultural Engineering
Tulare Irrigation District (TID) is located on the east side of the Central San Joaquin Valley just south of Visalia, CA. The district receives water from Lake Kaweah through Terminus Dam as well as from the Friant-Kern Canal. TID is the single largest partner in the Kaweah River Power Authority (KRPA), which operates Terminus Dam and regulates the discharge from Lake Kaweah.