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B. Examine Other River Issues 1) Identify Areas of High Flood Hazard Identify locations on the Roaring Fork River, the Fryingpan River and at tributary confluence points where flood hazards are substantial, defined as any flood which threatens the usability of human residences or infrastructure or critical environmental values or resources. Such identification will take into account mapped 50-year, IOO-year and SOO-year floodplains, existing structures affecting stream capacity, development within floodplain areas, and proposed changes to existing or historic floodplains through human activity. These areas will be identified on maps similar to those described under Task A.2), above, and will be described in a fashion similar to that described in Task A.2), above. " 2) Identify Habitat and Recreation Concerns Present a general assessment of habitat value (riparian vegetation, fish, wildlife) for the Roaring Fork and Fryingpan mainstems using existing data. Assess the recreational value, in terms of recreation-days, for representative reaches of the study and extrapolate overall recreational value from those assessments. Present estimates of the economic value of recreational activities tied to river access, stability and overall health. Identify threats to those recreational uses associated with stream instability. Identify public access needs, opportunities and constraints and alternatives. 3) Existin2 Identify Infrastructure at Risk Identify all public and private infrastructure items at risk from stream instability or flooding. Such structures may include, but are not limited to, bridges, ditch diversion structures, roads, railroads, water and wastewater treatment plants, recreation facilities, public utilities, schools, medical facilities and agricultural structures. Identify the nature and the cause of the flooding or instability risk and recommend mitigation measures. Distinguish between "HIGH", "MEDIUM" and "LOW" risk situations based on a matrix taking into account likely flood frequency, structural integrity, replacement cost, and other relevant factors. 4) Clarify Regulatory Requirements Develop a "cookbook" for local property owners and local government officials compiling regulatory requirements and programs relevant to floodplain and stream stabilization activities. This document should summarize federal, state and local regulations relevant to floodplain activities, disturbance of riparian habitat, earthmoving, water resource development, or other actions which might contribute to stream instability or floodplain manipulation, noting which agencies have jurisdiction under various circumstances and describing procedures for complying with most common requirements. The cookbook should be written in layman's terms so it can act as a user-friendly guide for regulators, elected officials or landowners.