Laserfiche WebLink
<br />,.., (~,) <br />/U. <br /> <br />At the completion of a 7-year research study in 1998, the SJRBRIP Biology Committee <br />completed a report that outlines and explains the flow recommendations believed to be necessary <br />to recover the endangered fish in the San Juan River downstream from Farmington, New <br />Mexico. The recommendations define the conditions for creating a more natural river flow in <br />critical habitat of the San Juan River (natural hydrograph).' These recommendations have been <br />accepted by the SJRBRIP Coordination Committee and have been provided to the U. S. Fish and <br />Wildlife Service (Fish and Wildlife Service) for their use, and Fish and Wildlife Service has used <br />them, in compliance activities under the Endangered Species Act. It is the position of the <br />SJRBRIP that these flow recommendations are necessary to protect and improve habitat of <br />endangered fish in the San Juan River. <br /> <br />Presently, Reclamation's operations maintain a minimum release of 500 cfs downstream from <br />Navajo Dam. Low flow releases of 250 cfs, could occur during any season under full <br />implementation of the SJRBRIP flow recommendations. These reduced flows were first tested <br />and monitored in the winter of 1996-1997. At that time, it wasn't apparent that low flows would <br />also occur in other seasons, particularly the sUlruner. Reclamation is therefore proposing a short- <br />term, low-flow test in July 2001 to evaluate the impacts of flows below 500 cfs during the <br />irrigation season. The duration of this test will range from 5 days to 10 days. At least as-day <br />minimum is necessary to collect sufficient physical, chemical, hydrologic, and hydraulic <br />engineering data to evaluate the 250 cfs low-flow. Additional time is also necessary to allow the <br />river flow to adjust to the decrease in releases from the dam (500 cfs release to a 250 cfs release). <br />Once sufficient information has been collected or if one of the conditions listed for canceling the <br />test occurs, the test will be stopped. This test will allow a better understanding of potential <br />impacts on summer water temperatures, irrigation, industrial, and domestic water supplies, fish <br />habitat, and recreation. The summer test will allow a more accurate evaluation and comparison <br />of alternatives in the EIS process. <br /> <br />Public meetings were held on June 12,2000 in Farmington, New Mexico, and on August 22, <br />2000, in Bluff, Utah to discuss a proposed 2000 low flow test. The test was subsequently <br />canceled because hydrology conditions weren't appropriate. Many people in attendance at those <br />meetings believed that it is necessary to conduct the test so that long-term impacts can be <br />evaluated with more certainty in the EIS. Others in attendance expressed concern about the <br />effect of the test flows (and the effect oflong-term operations changes involving low flows) on <br />irrigation and industrial diversions, water quality, recreation and related economies, and on <br />fisheries. Additional public meetings will be held in early April 2001 in both Farmington and <br />Bluff, Utah, to receive comments on the proposed 2001 low flow test. <br /> <br />'Holden, P.B. (Ed.). 1999. Flow recommendations for the San Juan River. San Juan <br />River Basin Recovery Implementation Program, Fish and Wildlife Service, Albuquerque NM <br /> <br />2 <br />