Water Measurement

01. Measurement. A rate of flow measurement shall be shown in units of cfs with three (3) significant figures and no more precision than hundredths. A volume measurement shall be shown in units of af with three (3) significant figures and no more precision than tenths. (7-1-25) 02. Diversion Rate. The diversion rate measurement must be conducted as close as reasonably possible to the source of supply and must be measured with the project works fully in place operating at normal capacity. (7-1-25) 03. Measurements. Water measurements may be made by vessel, weir, meter, rated flume, reservoir capacity table or other standard method of measurement acceptable to the Director. The examination report must describe the method used in making the measurement, the date when made, the name of the person making the measurement, a description of the location where the measurement was taken, and include sufficient information, including current meter notes, rating tables, or calibration information to enable the Director to check the quantity of water measured. (7-1-25) 04. Unacceptable Measurements. Theoretical diversion rates or theoretical carrying capacities are not acceptable as a measure of the diversion rate except as indicated in these rules and for diversion works where the flow rate cannot be measured accurately due to the physical characteristics of the diversion and distribution system. (7-1-25) 05. Method. Flow rate measurements shall be determined using equipment and methods capable of obtaining an accuracy of plus or minus ten percent (10%). (7-1-25) 041. -- 044. (RESERVED)