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. . A general plan of development for each dam site will be developed. The facilities required to store water and convey water to the particular use will be identified; however, appraisal designs will only be prepared for the dam and reservoir and any facilities necessary to convey water to the reservoir (e.g. off-stream reservoirs). Engineering designs will not be prepared for facilities to convey water from the reservoir. The appraisal designs will be based on the best available information, and will address: * description of a plan to incorporate the reservoir into an overall water supply development for the area, * estimate of average monthly water demand, * estimate of dry year(s) inflow to reservoir, * preparation of a reservoir elevation-area-capacity table * monthly computer reservoir operation study to size the reserVOl.r and determine yield which incorporates the water demand and the dry year(s) inflow, * determination of the inflow design flood, * computer reservoir operation study to determine surcharge capacity and spillway capacity, * determination of dam height from water demand/water supply and inflow design flood operation studies, * determination of spillway location and width, * determination of outlet works capacity based on water demand and dam safety criteria, * appraisal design of the dam embankment, (For purposes of this proposal, it is assumed that most if not all of the embankments will be earth fill, realizing that there may be sites which could utilize roller compacted concrete, gravity concrete dam, or other types of dam structures. unless the embankment is obviously not suitable as earth fill, HWE proposes to base the design on earth fill. If another type of embankment structure is necessary, HWE will prepare an appraisal design on the required structure.), * appraisal design of facilities to convey water to the reservoir in the case of off-stream reservoirs, 4