Norwich bulletin., 1911-01-30
for those parts of the city where Fair view furnishes inadequate pressure

view furnishes inadequate pressure
 Tho cost
 5. The cost of the pipe line and a small diversion reservoir yielding an average of half a million gallons daily is estimated at $1S5,000, exclusive of water rights.
 The cost of the one hundred milton gallon. reservoir including pipe line, giving a yield of S000 600 gallons daily. is estimated at $235,0O0, exclusive of water rights. A reasonable interest on this sum is about the same, as the probable annual expense of obtaining poorer water from Trading Cove brook by pumping.
 A reservoir holding sSO millions gal Ions and yielding 100000 gallons dai- ly is estimated to cost with pipe line $290, ,0o0, exclusive of water rights
 Regarding water rights it may be said that the mill owners are not dam aged while the water runs over their dams. During the dryest part Of the year the flow of the brook would be would be small. The principal damage to the mill owners is confined to those days when the flow of the streams is moderate.
 The area of the watershed to be di- verted is one and three quarter square the principal mill privileges is about 90 square miles. This makes the ap- parent diversion about per cent, while the real diversion would be less.
 Special Advantages.
 6. Among the special advantages that Jordan brook possesses, as an additional supply for the city of Nor wich, is the fact that it will provide for our needs at a moderate cost in the first instance and is capable of addi- tional development to keep, pace with the increased use of water.
 At per cent. the difference between $1S5,0Oo and $235, is S2,00e annual ly, which for ten years is s2o,o0o, and the interest on the difference between s235,0o0 and $2s0,0oo for ten years is 2,90o total saving by tlre gradual extension plan of s42,000, plus inter est on interest
 If we then need an extension of the works we can add other watersheds taking the water through the same pipe line.
 Under the charter is appears that the formal question is on the author ization of money to be expended on Jordan brook. Whether this authoriza- ton should be made or not depends on whether all things considered the people think Jordan brook is the best source.
 To aid fin this decision facts and estimates regarding other sources have been made as follows:
 Gardner Lake.
 This is a natural lake with storage increased by the erection Of dam and the lowering Of the outlet chan nel The surface of the lake is shown on the government topoghaphic maps to be 570 feet above mean tide. The difference in level between roll way of the dam and the ice as 1t stood the gates wide open. is five and one half feet. If the ditch were properly cleaned the water could be drawn two feet lower. The drainage area of the lake as surveyed by John T. Tanning is about five square miles. With the ditch as it now is, the lake has an available capacity of eight hun- dred and fifty million gallons, with which this source could be depended on for daily continuous supply of g. 5000 gallons.
 If the ditch were cleaned so as to draw seven and one-half feet, the daily dependable supply would be increas e6 to 3,400, 900 gallons. If a pipe were extended into the lake so as to be able to draw the lake Il 1-2 feet below high water, the dependable daily supply would be 3,700,000 gallons. The watershed has but few houses upon it near the lake. There are a few cottages used in summer only, and there are several camps used in vaca- ticn time by several hundred men and UOyS. 1H0Te IS InuCIl UdLlllIlS, DOdlillE and fishing in summer.
 We have estimated the cost of de- veloping water supply in several ways. r A. By running a pipe from our pres ent system to and through the exist l ing dam. terminating in a gate house and screen chamber, and erecting s permanent dam across the present channel at such height ;As would in- l sure the city the use of such amour, of water as they wish to acquire the right to take.
 draw water until the surface of the 1 lake was drawn down to the level oi said permanent dam. leaving the bal ance of the water for the city's use. In this arrangement the city's use should be limited to & specified mum
 Der of gallons daily by purchase ol l condemnation. We estimate the cost of this devel. l opnrent, exclsive of water rights, al | $194,00O.
 B. If it were desirable to obtain ths right to take all the water now avail | able to the mill owners with the ditcF ! cleaned, the expense. exelosive of Wa. | ter rights, is estimated at $202,0 l c. If it was decided to be desirable 1 to place the pipe II 1-2 feet below tht 1 top of dam, so as to increase the stor' age capacity and yield of 'he lake, the
 
 about 1000 feet from the shore of tht | pond as it was Doc. 21. 1910. | Our estimate of the cost, excluding water rights, is $235,000... | The right to draw the water should 1 be fixed by bargain or condemnation l as the right to draw a specific number of gallons daily and this should be as suretf by suitable dam. Stony Brook. 1 This stream is situated in the towr ! of Montville between Trading Cove | brook valley on the north and the Ox- | oboxo valley on the south and Gardner | lake on the west. It's watershed is2.;
 square miles. which is equal to that ol | Fairview and Meadow brook combin- i ed.
 l On this stream at q point where the ! watershed is 1-2 square miles about ] $500 feet above the main dam site il l d grist mill and dam storing about 1 100000 gallons of water owned bs 1 the city of Norwich, There are only three houses on the watershed except
 on it's eXtrenae margin, and one ot quirel by the city, if this source were l adopted. The elevation of the broot ] at the dam site, where the watershed ] is e.? square miles. is 240 feet above mean tide. The elevation of the gris' l mil pond is 290 above mean tire. oi l about 40 feet above Fairview reservoir | There are several ways that this source eau be developed, A. By 24 inch pipe leading to tho main dam site and small diversion | dam at a little higher elevation thar
 (Continued on page seven.)