^04 SEVENTH REPORT OF THE FOREST, FISH AXD GAME COMMISSION'. 



SIZE OF CA IXHMl-.NT 

 NAME OF STATION. IN SQUARE Mil IS. 



i8. Cayadutta Creek below Johnstown, - - - - 40.0 



19. Schoharie Creek, State Dam, Fort Hunter, - - - 946.7 



20. Mohawk River at Re.xford Flats, - - - - - 3,384.9 



21. Hudson River at Mechanicville, ----.. 4,506.7 



22. Hudson River at Fort Edward, -.-... 2,800.0 



23. Schroon River at Warrensburg, ---... 565.0 



24. Black River at Fluntingtonville, ------ 1,888.6* 



Of the foregoing stations, that on Hudson River at Mechanicville, Hudson River 

 at I-^ort Edward, and Schroon River at Warrensburg, had been established, as just 

 detailed, in 1895, in connection with the Upper Hudson Storage Surveys. The 

 station on Black River, at Huntingtonvilie, had been established in March, iSyj, by 

 the Watertown Water Works, the data of which were placed at the writer's dis,josal 

 by the Roard of Water Commissioners of the City of Watertown. Aside fiom tiiese 

 four stations, the foregoing were established in 1898, in connection with the deep 

 waterways work. 



On the completion of the tlcep v/aterways work, in 1899, these stations were 

 turned over to the U. .S. Geological Survey, the understanding being that gagings 

 would be carried out at them for several years. This condition was made because 

 of tile writer's opinion that the_\- offered an e.xceedingly good opportunity to deter- 

 mine whetlier or not the run-off of streams is measurably innuciiccd b_\- the density 

 of forests. .Several of the streams included in the list lie to the south of the 

 MohawJc River and are tributary to that stream. These issue from a highly 

 cultivated country, very largely deforested. There are also several of them which 

 lie to the north of the Mohawk, issuing from a country still chiefly in forest. The 

 geology, however, is quite different. To the north the streams mostl\' flow o\-er 

 Laurentian granite, while to the south their head waters are in the Clienning and 

 Catskill formation, a compact sanilstone.+ 



In 1900, a small appropriation was obtained from the Legislature, and since that 

 date the gagings work has been done jointl}- by the .State of New York and the 

 U. -S. Geological Survew 



For various reasons there has been considerable change in these stations, and at 

 present time gagings are kept at the following places: 



*Some of these areas are approximate only, due to the inaccuracy of available maps. 



f Tile geologv of these several streams, togetlier \vii\\ that of Hudson, tlenesee, Croton, and (»ther 

 catchment areas, is discussed at length in the paper. The Relation of Rainfall to the Rnn-oflf of Streams, 

 and is, therefore, only slightly touched upon here. The interested reader is ref'^rred to that paper for 

 full details. 



