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ORI-\fl Cucumber Gulch, South Barton Gulch and Middle Barton Gulch: dredge mining has interrupted the channel's natural flow path to the Blue River. currently, the flows infiltrate into a wetland area. However, large floods would continue across Park Avenue and Watson Street. provisions must be made for properly accommodating a large flood from this watershed, otherwise there will be the potential for considerable flood damage once the area is developed. The Town should develop a plan for routing the drainage to the Blue River and pursue acquiring the necessary easements. This drainage would be an excellent location for a regional type water quality control facility. During runoff and summer thunderstorms, a considerable amount if sediment is generated form the steep slopes and ditches along Ski Hill Road. Construction of a sediment pond in the area downstream of Ski Hill Road would enhance the water quality. In addition, detention could be incorporated to reduce the size of the downstream system required to convey the flows to the Blue River. East Side Drainages The east side drainages are defined as E-l through E-7. They comprise a total drainage area of 125 acres. The main features investigated for each of these basins were the conveyance system and the effect future development would have on peak discharges. Based on these two factors, an assessment of the need for improvements, easements, and the role of detention in each basin was made. Basin E-l drainage system is adequate. A drainageway and easement should be defined from Broken Lance Drive to Illinois Gulch prior to developing the open area that the flows currently pass through. Future projects should be required to provide detention in this basin to prevent the drainage system from being inadequate. Basin E-2 requires a similar easement to convey flows from Snoberry Lance to Illinois Gulch. The potential for future increased in discharges are minimal, detention is not critical in Basin E-2. The major concern in Basin E-3 is that the curb inlets have insufficient capacity to intercept the entire 50- or 100-year floods. Therefore, approximately 30 to 50 percent of the discharge from these flows would continue on Main Street into Basin E-5. Detention requirements are marginal in this basin since it is nearly fully developed. The drainage system in Basin E-4 has sufficient capacity for both existing and future developmental flows. Detention in this basin is not critical from a flood control standpoint. Basin E-5 will receive a considerable amount of overflow during the 50- and 100-year floods from Basin E-3. Flow depths along Main Street would likely cause local flooding in some of the shops, 45