PROJ00540 - Laserfiche WebLink

Home Browse Search

Future Winter Water Demand Minimum Year Supply: sprin9s & Runoff Existing Town Reservoir , Additional Future Wint~r Water Needed or 167.0 AF (50.0)AF (24.5IAF* 92.5 AF** 30 . 2 MG I I I I I I I I I I I I I t I I I I I represents the deficit that must be supplied by Gurley Water. Table IV-K ~ummarizes the accumulative differences between demand!and supply from the Town's water riahts in Gurley canvon, which are shown on Figure IV-B. The table indicates that there is excess water at present, since Gurley shares of 60 AF make up for the 33 AF deficit. However, winter storage is barely adequate: the present reservoir has an estimated usable capacity of 8.0 MG (24.5 AF) and the table shows that storage required for winter is 24.0 AF. Table IV-!K Accumulative SuPP1v ~ Deficit = Minimum Year (Exclusive of Gurley Shares) Period Annual Winter Jan 1 - April 30 (16.0AF) (16.0 AF) May 1 - Oct. 31 ( 9.0 AF) Nov 1 - Dec. 31 ( 8.0 AFI ( 8.0 AFI (33.0 AF) (24.0 AF) If Norwood sells all the 200 taps on the waiting list, the Town Reservoir will be inadequate. Assuming 2.3 people/tap and 100 gpcd in winter, additional water storage needed for the 200 new taps would be 25.8 AF. Also, it is difficult to use all of the volume in the prese~t reservoir; a certain depth must be maintained f6r operating purposes, particularly in winter to prevent freezing. D2. FUTURE SITUATION - MINlMUM.FLOW YEAR 1. Reservoir Size Needed. Future winter water demand ,in the year 2035 (the last year of the planning perioq) is estimated to average .300 MGD (.92 AF/day) or 1~8 AF/winter. Existing usable winter sto~age is estimated to be 8.0 MG or 24.5 AF. The required future winter water requirements were calculated as follows: *This represents stored Gurley Water **Approximately 5% should be added to this to account for evaporation and seepage losses over IV-27