Laserfiche WebLink
<br /> <br />';" <br /> <br />~., <br /> <br />Obsolete structures contribute to poor water management (SCS photo.) <br /> <br /> <br />Modern automated surface system with hydraulically <br />operated tip-down check with push-off turnout valve <br />provides improved control of water (SEA photo.) <br /> <br />\1 <br /> <br />The need for automation of <br />surface irrigation systems is <br />great because high energy <br />costs preclude alternative <br />irrigation methods with low <br />labor requirements. <br /> <br />1!! <br />. <br /> <br />Automated systems are avail- <br />able for releasing water <br />from both pipelines and <br />open ditches, using hydrau- <br />lic, pneumatic, electronic, <br />and spring-wound timer con- <br />trol systems. <br /> <br />:tl <br /> <br />00G3:,.: 4 <br />