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. The Soil Conservation Service: I. Conduct engineering field surveys for hydrologic and hydraulic studies, 2. Conduct hydraulic and hydrologic studies, and develop water surface profile and cross-section data. 3. Develop flood plain outlines on the photogrammetric maps for the 100- and 500-year frequency floods. Flood plain outlines will be based on existing channel and flood plain conditions. 4. Conduct surficial investigations to identify and delineate historical mudf10w areas. 5. Prepare and distribute review draft of the Flood Hazard Analyses Report. 6. Provide one set of photo positive mylars with flood plain out 1 i nes on a sca 1 e of 1" = 200'. 7. Prepare Flood Hazard Analyses Report for publication. REPORT PREPARATION AND CONTENTS . A preliminary draft of the report on the study will be prepared by the Soil Conservation Service and submitted for review to the officials of Chaffee County and the Colorado Water Conservation Board. After reviews are made, a final copy of the cooperative report will be pre- pared for publ ication. The report wi 11 i nc 1 ude the fo 11 owi ng: 1. An introduction giving background information on author- ities and reasons for the study. V. Photogrammetric maps with flood plain outlines for the 100- and 500-year frequency floods on a scale of 1" = 400'. Mudflow problem areas will be identified on the maps, II. A discussion of historic and current flooding, and mudflow conditions. I I I. A section on sources of data and methods used in the analyses. IV. Narrative describing the results of the study. This section will include exhibits of water surface profiles and representative cross-sections for the selected flood frequencies. . 5