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<br />OOOG67 <br /> <br />. <br /> <br />. <br /> <br />many studies made In that area by the Forest Service. This one happens to be one of <br /> <br />the first to our knowledge and was pub! Ished In 1958. One of the things that was brought <br /> <br />out was that the Forest Service would continue to do research at the Expermental <br /> <br />Forest to determine the effects of forest management on the water yields from <br /> <br />snowfed streams on drainage basins, However, this stdy brought out many facts. It <br /> <br />compared a controlled or denuded area with the quantity of snow accumulated in <br /> <br />comparison to the control arca on sagebrush, young timber plots, forests lackIng <br /> <br />reproduction beneath trees, and forests containing reproduction beneath trees. <br /> <br />~ <br /> <br />The quantity of snow accumulated percentage-wise from the control area diminIshed <br /> <br />from 5 to 30 percent. Sagebrush received approximately the same as the control <br /> <br />area, young timber plots had a reduction of 5 percent, forest lacking reproduction <br /> <br />beneath trees had 25 percent less snow, and forest containing reproduction <br /> <br />beneath the trees had 30 percent less snow. <br /> <br />These experiment results Indicated that forested areas produced less runoff <br /> <br />than the open areas. According to the study the losses In the forested areas <br /> <br />~ <br />~ .~ <br /> <br />are attributed to Interception and evaporation. <br /> <br />Other Investigators have Indicated that, using the forest experiments In the <br /> <br />Fraser area and comparing the differences In quantity of snow accumulated would be <br /> <br />different than those In other areas such as the San Juan forest or the Grand Mesa- <br /> <br />Uncompahgre forest because of the fact that the winds are different in those <br /> <br />areas and .that the types of trees have a bearing also because they are different. <br /> <br />The snow In the Fraser Experiment Station area would be retained in the branches <br /> <br />for a longer period of time because of the low winds and would be subjected to <br /> <br />transpiration and evaporation losses different from those experienced In the other <br /> <br />forests. <br /> <br />(8) Local Climatic and Hydrologic eonsequences of Creating Openings in Climax Timber <br />of Northern Idaho. U.S, Forest Service, June 1979 <br /> <br />In this study conducted by the Forest Service, cl imatic and hydrologic responses <br /> <br />of small and large clear cuts on the north and south aspects in northern Idaho were <br /> <br />5 <br />