That is, a turnout usually has a valve to adjust the flow rate somewhere between maximum and zero. However, in many cases the downstream conditions determine the flow rate, and the turnout on/off control valve remains completely open. An example would be a piped or gravity turnout with a pump immediately downstream. 3.
Turnouts: - A Flow Control Structure Providing Irrigation Water at …
Turnouts are flow control structures that provide irrigation water from supply canals to offtaking canals. They connect the supply canal operator to users (farmers). Good turnout design must satisfy both parties by ensuring farmers receive their due share of water on time.
Measurement of Irrigation Flows through Irrigation Turnouts
1991年7月1日 · Accurate measurement of applied water volumes in surface irrigation fields is important towards improving irrigation efficiencies and management of the surface irrigation system. In flood irrigated fields, applied water may be supplied through spiles, or turnout pipes connecting the field directly to the supply canal.
Cal Poly - ITRC - Irrigation District Turnouts
Irrigation District Turnouts. Sponsor: California Department of Water Resources Download at DigitalCommons . This is meant to be a very quick, roughly written primer on irrigation district turnout selection. It by no means covers all of the details, but it might help out. Burt, C.M. 2010. Irrigation District Turnouts.
Improving Flow Measurement Accuracy Using a Portable Irrigation Turnout ...
2017年5月1日 · Relatively accurate flow measurement at irrigation district water delivery points is an important component of volumetric billing and equitable service. In California, this has often occurred with conversions to pressurized irrigation systems which commonly include the installation of pipeline flow meters as part of the on-farm system.
23 D rop stricture conibiicd ,Aith turnout ..... 31 24 Concretc tr apeitmdd d,p lructire , ... 44 W ooden turnout for basin and border irrigation ..... 50 45 Two designs of wooden turnouts ..... 50 46 Turnout-check structure using extruded ...
Measuring devices at farm turnouts on open channel irrigation systems are discussed under six general functional classifications. Illustrations of each classification in use in different parts of the world are cited. Conclu sions regarding the type best suited to …
Irrigation Canals & Turnouts | Xylem US
Irrigation Canals & Turnouts. The demand for monitoring flow in open channels has evolved. Climate change and water scarcity issues have increased the demand to quanitfy increasingly smaller flows. In the past, the irrigation community has applied a variety of technologies that might have been "close enough".
Water Control for Farm and Residential Flood Irrigation
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LESSON 14 Structures for Diversions and Channel Crossings
Turnouts are constructed in the bank of a canal to divert part of the water from the canal and ditches to basins, borders, and distribution laterals. Turnouts can be concrete structures or pipe structures. A turnout may have a fixed opening in the side and equipped with the device to control the area of opening.
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