Waterbury evening Democrat., 1908-11-17
CITY ENGINEER CAIRNS REPORT A Survey oi Watersheds In Vicinity of Prospect He Tells
 What May Be Expected From That Direction.

board of aldermen met last up, water rights would ha received tho renort of cty bought from least c.,,n. ..,. .n . considerable land would ha m es e ~ bought and much piping we the Prospect valley show to be done through n rocky most the city could possibly The district Is swampy, th would be yield of 500,- states and vast amount Ions day The estimated would have to be removed not given but in order suitable storage. The COT amount of water mentioned ton received and place ms would have to be thrown The report follows:
 Waterbury, Conn. Nov. 16, 1908. To hc Honorable Board of Aldermen:
 Gentlemen:--In accordance with the vote passed by your Honorable Board November 2. 1908, at once began surveys of the lying immediately west of Prospect center and draining into the Naugatuck river Union City. Two lines of levels into the district which checked up closely thus making sure or the elevations The general topography of the proposed watershed Is given on the state map have compared 1t the ground and found it apparently correct Wers have been erected at several points and the present flow of the streams determined 4
 find that reservoir can be created point near old pond, (owner. formerly Twchell, now Payne), the westerly edge of the meadows and woodland which together form level tract within mile west and southwest of Prospect Center. Such reservoir would have elevation sufficient to permit of its dis charging through pipe line about miles long into the main reservoir on East Mountain and so forming part of the High Service. Its tributary watershed would be about 0S7 square miles, and with reservoir of sui
 cient size estimate that there could be obtained here a daily supply of about 100000 gallons
 This watershed cannot well be increased by moving the location of the dam down stream account of the rapid fall of the brook below the edge of the plateau On November 10th, 1908, flow of about 103 900 gal Ions day found in the stream at the point re- ferred to.
 The next point at which a reservoir be made is at the Russell pond, so-caed This is the lowest point the stream where any amount of storage be ob- taned from this point to Union City the valley being too steep and narrow. In order to make reservoir here two dams of considerable length will be required there being side outlet from the basin nearly low the main valley The tributary area, including that above the Twitche pond is square miles, part of which secured by means of small diversion dam and pipe line bringing in stream which does not reach Russell pond The elevation is between that of the Branch reservoir and that of the proposed in Morris estimate that with sufficiently large reservoir here daily supply from the whole watershed of about and one-half million gallons be cured. This is not in addition to the amount given above for High Service reservoir, but the assump tion that the upper dam is not built At the Russell dam about 500,000 gallons per day is running in the streams which could be gathered together at that point.
 In brief it appears these Prospect Valley streams can be made to yield 100000 gallons day for the High Service and in addition about 800 900 gallons per day for the Low Service. To accomplish these suits it will be necessary to purchase sufficient land to construct three large dams and one small to locate flooded highways to clean out two swampy basins in which the muck is quite deep rights way for and to build two pipe lines through rough rocky country, and to compensate the of small water powers In case only the High Service is developed dam, dke to close side valley, new highway pipe line reservoir basin and less land would be needed with the damages for diversion of water probably about the if both services are worked up. This would add 900 gallons per day to the present supply. In the High Service part were omitted the Low Service part would furnish one and one-haf million per day. involving the purchase land building of two large and small (diversion) dams cleaning the reservoir site relocation of highways and the construction of one pipe line and purchase of all water rights It will require weeks of field and office work before will be possible report estimates on the cost but the figures of yield of given above are close approximations. It may be worth while to state that they based higher rates per square mile of watershed than those used calculations for the Branch yield.
 I submit herewith map of the watershed with the West Branch also shown, for purpose of comparison Also photographs of the several streams showing the weirs erected to the flow At the weirs all of the streams 24 inches wide and from one to three inches deep
 Yours very respectfully,