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is an armored degrading stream. Some portions of Oak Creek within the reach of interest are degrading, but others are aggrading. For the most part, The Oak Creek channel is not armored. Substantial channelizotion of Oak Creek by the roiiroad, highways, and other activities within the permit area has occurred and the present condition of the stream is not the natural one. Both streams have incised into bedrock in The study area. The flood plains along the streams are designated OTI Terraces and are underlain by modern alluvium. Vegetation on The flood plains is mostly willow brush and a variety of hydrophytic grasses. These vegetation types are located in the areas of The flood plain where the water table is near the surface throughout most of the year. Locally higher areas of the flood plain support sagebrush. The high elevations of the watershed are forrested with aspen and spruce while aspen, oak brush, and sagebrush dominate the cover on the intermediate and lower elevations. The precipitation on the watersheds of interest is probably best characterized by the record at Pyramid, Colorado. No temperature record is available at this station, however, but The temperatures at Steamboat Springs approximate those expected on much of the watershed. The mean precipitation and temperature by month are given in Table 2.5-3. Also indicated in Table 2.5-3 are solar radiation data and a breakdown of total precipitation into rain and snow components. Further discussion and use of these data are contained in a subsequent section. Runoff Characteristics -Several stream gaging and water quality monitoring stations were established on Trout Creek and Oak Creek as part of this study. Exhibit 2.5-2 shows the location of these stations as well os the locations of alluvial wells and the flumes installed on ditches used for diversion of irrigation water. This exhibit, a composite location drawing, also shows information repeated on succeeding exhibits, e.g., all drill holes, wells, adjudicated water rights, cross section locations, etc. Fifteen months of data are available aT the time of this writing from the stations established in this study. Data are also available from a previous study McWhorter, et al., 1979) and the location of selected stations from this previous study are also shown on Exhibit 2.5-2. The designation of stations uses the following convention: TR and OK refer to Trout Creek and Oak Creek, respectively with a, b,... referring to gaging stations beginning at the upstream end of the reach. Numbers following the watershed designation refer to alluvial wells, beginning with The number one at the upstream end of the reach of interest. Capital letters A, B,... following the watershed designation refer to The locations where water quality samples were collected. Stations designated as C2, C3, and C6 on Exhibit 2.5-2 are Revised 7-81 2.5-6