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installed to engineering specifications to insure proper measurement, must be maintained in condition to <br />provide accurate measurement throughout full anticipated range of flows and shall not be deemed <br />complete until such time that a rating table accurately calibrated to the measuring device has been made <br />available to the water commissioner. Any measurement device that is not installed to manufacturer's <br />specifications may be required to be verified at owner /operator expense. <br />DWR typical is the Parshall, Cutthroat, or Montana flume properly installed in a free -flow condition with <br />sufficient upstream stilling basin to provide proper approach flow conditions, sufficient elevation to ensure <br />hydraulic "jump" to prevent submergence at all anticipated stages. (See DWR drawing "Typical <br />Headgate /Flume Installation ") <br />RECORDING DEVICE <br />Recording device shall mean any device acceptable to the Water Commissioner which is minimally <br />capable of continuous recording of stage data at a resolution of .01 foot or other equivalent positive <br />determinant of discharge at a resolution of comparable accuracy through an approved measurement <br />device at no greater than 15- minute intervals over a period of time also acceptable to the Water <br />Commissioner. The recording device must include a means to verify on -site that the device is properly <br />calibrated to the gage height or other discharge determinant. Such recording device shall not be <br />deemed to be complete and acceptable until all equipment and software necessary to download and <br />process recorded data is supplied to the Water Commissioner and /or the Division Engineer. <br />DWR typical is the Sutron Model SDR- 0001 -1 Data Logging Shaft Encoder or equivalent properly <br />installed in a lockable protective shelter. <br />Note: DWR may require replacement of existing chart -type recorders with data - logging technology as <br />needed to control workload. <br />TELEMETRY <br />Telemetry shall mean any method of determining and transmitting discharge or streamflows on a real - <br />time or near real -time basis (only as limited by technology) by satellite monitoring, dedicated land or <br />cellular phone or any other means of communication that is accessible by DWR and the public at large. <br />Such telemetry must include a means to transmit stage and discharge, plus other parameters as required <br />and shall not be deemed complete until a suitable calibration of the telemetry and measurement method <br />is accepted by the Division Engineer. <br />AUTOMATIC SELF - REGULATING DIVERSION CONTROL <br />The purpose of such controls is to regulate fluctuations to the rate of diversion that would otherwise occur <br />as a result of changes in head pressure associated with variable rates of streamflow or obstructions to <br />streamflow. An acceptable automatic self - regulating diversion control shall mean any system of flow rate <br />sensors, connected to headgate and /or wastegate controls capable of autonomously re- regulating <br />fluctuations in rate of diversion of up to 10% of the desired rate within a period of no more than 15 <br />minutes. <br />