FIELD: irrigation systems. SUBSTANCE: invention can be used in back water-and-crossing structures. Proposed hydraulic autoregulator contains box-shaped gate with horizontal axle or rotation on channel apron. Rectangular plate with lip in upper part in hinge-mounted on axle over boxshaped gate through its entire width. Angle of tilting of plate with lip can be changed by screw lift. EFFECT: provision of automatic maintenance of preset level of downstream depending on phase of plant development. 2 dwg
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