Agenda - 12-18-1985 - Laserfiche WebLink

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3 would not have a revenue source to pay back the money borrowed to build the reservoir. PROPOSED IMPROVEMENTS Don Cordell referred to the list of things that could be done to get more out of the existing water supply. He prioritized those items: 1. - L2IJhE ORANGE - Raise the present normal lake level 2 I feet by installing a rigid flashboard system across the present spillway crest. 2. STORAGE AT CORPORATION LAKE - Provide gravity bypass around existing dam at Corporation Lake to al ow for normal operation of lake at water levels le s than full, thereby increasing the safe yield av ilable from the upstream drainage area. 3. FLSHBOARDS AT CORPORATION LAKE - Add flashboards to raise the normal lake levels. The twol priorities at Lake Ben Johnson include: 1. Raislp the present lake level by 2 feet by installing flashbobrds. 2. Remove accumulated sediments upstream of the bypass sluice gate to assure proper operation of the sluice gate and allow for normal operation of Lake Ben Johnson at less than full pool elevations. Don Cordell pointed out that if all modifications could be done, the MGD would double. He encouraged the County to identify future sources of water supplyl. Mayor Fank Sheffield responded that the Town has. agreed to raise thp level of Lake Ben Johnson by two feet at an estimated copt of $75,000. All modifications outlined in the report would cost approximately $120,000. In the County matches funds by using the State grant money, the modifica- tions could be completed in a shorter period of time. Chair Wilihoit stated that the County will receive $98,000 ove a two year period and the money will be used first for the improvements on Lake Orange and then improve- ments on the' capacity of Lake Ben Johnson and Corporation Lake. He questioned the funding source for matching and Mayor Sheffield indicated his hope that Chapel Hill and Carrboro will contribute a portion of what they receive from the state grant to make the improvements at Lake Ben Johnson since these improvements would benefit Chapel Hill and Carrboro as well as Hillsborough because OWASA draws from that supply. Chair Wilihoit concurred with Sheffield's suggestion. He noted that a cooperative effort needs to be worked out whereby OWASA's water demands can be met without jeopardizing the availability of water for everyone. In answer to a question from Remus Smith, Ken Thompson indicated bids would be received in February or March for the