epth of run-off, in inches, from the drainage basin of north (of James) River at Glasgow, Va. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. nual. An Average epth of run-off, in inches, from the drainage basin of James River at Buchanan, Va. An Year. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. nual. 397 98. 1.06 1.68 1.99 0.48 3.75 1.90 0.88 1.86 0.52 0.54 0.36 0.23 0.23 0.20 0.54 11.49 14.35 Depth of run-off, in inches, from the drainage basin of James River at Car tersville, Va. An Year. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. nual. 4.55 3.35 4.55 1.67 1.29 0.62 0.32 0.54 0.52 0.31 0.59 Depth of run-off, in inches, from the drainage basin of Appomattox River at Mattoax, Va. T Year. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. nual. An SOUTHERN ATLANTIC COAST DRAINAGE. Systematic measurements of discharge of many of the larger rivers. of the Southern Atlantic States have been made during the year. The drainage areas of the rivers in that region are in general similar. Most of the streams rise in the southern Appalachian Mountains or their foothills. In the upper part of their courses they are rapid, with considerable fall. Across the Piedmont Plain their valleys are wide and their flow in general is sluggish, with occasional falls over rocky beds. Many of them have falls that could be utilized for water power, and it is largely to that end that data of the flow are being collected. In the study of water power it is important to know the flow and the fall. The fall can readily be determined by an engineer, but the variations in flow often require long and careful study. Gaging stations, to determine the latter, have been established on nearly all of the larger streams in the region, and it is hoped that in the near future our information of their fall will be extended. The stations maintained by the survey in previous years were kept up during 1901 on the following rivers: On Roanoke River and tributaries; on Cape Fear, Yadkin, and Catawba rivers; on Savannah River and tributaries; on Oconee River and tributaries, and on Ocmulgee River. New stations were established in Georgia during 1901 on Middle Oconee River near Athens; on Oconee River at Barnett Shoals; on Apalachee River near Buckhead; on Alcovy River near Covington; and on Ocmulgee River near Flovilla. The results for the year 1901, where available, are given on the following pages. In addition to these so-called permanent stations, many temporary stations are being maintained on streams in the Southern Appalachian region, the results for which will be found in the water-supply papers on operations at river stations. Storms of considerable magnitude and duration during May and June, 1901, were the cause of high floods on the rivers draining from the Appalachian region into the Atlantic and the Gulf of Mexico. The damage caused by the freshets on some of the rivers was very heavy, particularly along the Catawba and Yadkin rivers, and along Cane Creek and Elkhorn Creek, in McDowell County, W. Va. Although the precipitation in these instances was unusually great, the rapidity and the violence of the run-off must be attributed in no small measure to the partial deforestation that has taken place at the headwaters of these streams. The accompanying illustrations will furnish an idea of the nature of the havoc wrought in some localities. ROANOKE RIVER. Estimated monthly discharge of Staunton River at Randolph, Va. NOTE.-Gage heights and discharge measurements for 1901 are given in Water-Supply Paper No. 65, page 239; rating table on page 319 of same paper. Estimated monthly discharge of Dan River at South Boston, Va. Estimated monthly discharge of Dan River at South Boston, Va.-Continued. NOTE.-Gage heights and discharge measurements for 1901 are given in Water-Supply Paper No. 65, page 240; rating table on page 319 of same paper. Estimated monthly discharge of Roanoke River at Roanoke, Va. NOTE. Gage heights and discharge measurements for 1901 are given in Water-Supply Paper No. 65, page 241; rating table on page 319 of same paper. |