WSP06233 - Laserfiche WebLink

Home Browse Search

I": I C) C'l N I 00 N c.,,'1 I I I I I I I I I I I I I Mr. Hat O. Simpson, State Engineer February 9, 1999 Page 2 IAWMA proposes to change this arrangement to allow the water available under its share of the Highland water rights to be measured in the Purgatoire River as it passes over the Highland diversion dam without an actual diversion. The water available to the other four stockholders will continue to be diverted into the canal with the water distribution to be based on stock ownership. IAWMA will also make an allowance to these other shareholders for the addltlonal canal loss that will occur as the result of the removal of LAWMA water. This method of measurement will require the establishment of a gaging station at the Highland diversion dam and either a Parshall flume or rated section on the canal a short distance downstream from the diversion facilities. Both locations would be equipped with signal transmillers so the flows could be monitored on a real-time' basis by Division 2 and LAWMA personnel. The water available under the Highland rights will be the total of the flows passing the diversion dam and being diverted into the canal as limited by calls under downstream senior water rights and the various volumetrics that are established in the annual replacement plan provisions or by the Water Court once LAWMA's plan is adjudicated. Measurements for the ratings can be made in the river just below the diversion dam. This arrangement would be (he same as that used to measure the flow in the river at Nine Mile Dam, Although the Highland diversion dam is relatively tight a small amount of leakage presently occurs at the dam. LAWMA intends to repair the dam to eliminate this leakage, Once the dam is repaired, it should not be necessary to account for the leakage in allocating water to the Highland rights. LAWMA is willing to reimburse you for the reasonable costs of establishing this gaging station and to work out an arrangement for maintaining the gaging station. Our analysis of the gaging data at Carlton and Granada leads us to conclude that the Granada gage is adequate for determining the water available to lhe X-Yo The tabulation included wilh lhis letter shows the waler thaI was indicated to be attribulable to LAWMA's water rights in 1998 using the data from lwo gaging stations and the methodology reflected in the accounting that LAWMA presently submits. The Carlton gage aclually showed that more water was available to these rights. Therefore, LAWMA believes that the Carlton gage could be moved to the Highland to reduce the costs. If you have any questions or need additional infonnation, please call. Sincerely yours, HELTON & WILLIAMSEN. P.C. ~~r~ Duane D. Helton DDH/mle Enclosure cc: Steven J. Witte w/enc. Dale Straw w/enc. Donald F. Higbee w/ene. C:~IDIVl2E~j 14.-(t. 4 ((.,,,,t) EO"d '::J'd <u..swe~LL~M 'll uo:].,.....'