466 SEVENTH REPORT OF THE FOREST, FISH AND GAME COMMISSION. 



SIZE OF CATCHMENT 

 NAME OF STATION. IN SQUARE MILES. 



36. Walkill River at P.ew Paltz, .--...- 736 



37. Ten Mile River at Dover Plains, ------ 195 



38. Housatonic River at Gaylordsville (Conn.), . . - . - . 



39. Croton River at Croton Dam (Old), - - - . . 33(5 



40. Chittenango Creek at Bridgeport, ------ 307 



41. Chittenango Creek at Chittenango, ----- yy 



42. Oneida Creek at Kenwood, ------- ^g 



43. Beaver River at Tisse's Bridge, below Croghan, - -' - 242 



44. Moose River at Moose River, ------- 346 



45. Fishkill Creek at Glenham, ------- - - 



46. Richelieu River at Fort Montgomery, ----- 7.75° 



47. Cayadutta Creek at Johnstown, ------ ^o 



48. \Vesr Branch Fish Creek at McConnellsville, . - - - jgy 



It is a matter of congratulation to the writer that lie has been instrumental in 

 inaugurating so important a work in the State of New York. He refers to this tlic 

 more willingly, because the Annual Reports of tlie State Engineer and Surveyor, in 

 which these data are published from yeav to year, have given him full credit for the 

 work. I'c is a matter of special gratification in this connection, the writer may say, 

 that he publislied in 1900, in a paper* which appears in the Report of the Fish, 

 Game and Forest Commission, for that year, the first catchment area map of the 

 State thus far published. This map has been republished by the ^Merchants' Asso- 

 ciation of New York City + and by the State Engineer in his Report for 1901. . 



While (ju the historical part of this subject, the writer may further mention that 

 in 1900 he published a paper, read before the American Society of Ci\'il Engineers, 

 On the Flow of Water Over Dams,:]: which extends the data for computing dis- 

 charge of weirs far beyond previous results. It is now possible to compute the 

 flow over a dam up to a depth of 9 or 10 feet. Precise measurements were made in 

 some cases to over 5 feet. The experiments also show that at this depth the 

 discliarge cirve becomes sensibly constant, so that there is no serious difTicult}' 

 in extending it, when necessary, to 9 or 10 feet, as just stated. 



Previous to these experiments work on flow over weirs had been confined to 

 comparatively small quantities. Thus, taking the chief experiments in order of 

 time. Ponccliot and Lebros work with a limiting head of 0.68 feet and with a length 



*NjtiH.ii .iinl .\rmiLiai Fuiol Rcstriv uirs iji llic .Mate of New York. 



f An Iiu|uiry into the Conditions Relating to the Water Supply of the City of New York. By The 

 Merchants' Association of New York, icpo. 



I Trans. Am. Soc. C. E., Vol. XI. IV. pp. 220-398. 



