Analysis of flow duration curves showed that reforestation of a 44-acre watershed near Coshocton, Ohio, reduced flow in the low flow tail of the curve but did not significantly reduce flows above 0.25 inch per day. Other analyses showed that reductions also. occurred in the maximum annual flow volumes for all periods of flow durations of I day or longer. The onset of dormant season flow was significantly delayed. Data from a 43.6-acre watershed at the North Appalachian Experimental Watershed have been the subject of several analyses during the past decade. About 70% of this watershed was reforested to pines in 1938 and 1939, whereas the remainder was left in uneven age hardwoods. The latest analysis [Ricca et al., 1970] con-ß ß ß ß ß REFORESTED ! o o o Oß ß o ß ß o 000 ß ß ß O0 ß ß 0 ß ß ß 0 CLIMATIC INDEX • oO oo ß 0-0 -ß • ß ß ß O• ß •-O0 q• ß _ ß REFORESTED (ADJUSTED)
1542-A, 1959. Tennessee Valley Authority, Division of WaterControl Planning, Hydraulics Data Branch, A brief history of watershed research in TVA, 2'9 pp.,
The av erage error of determining mean rainfall on watersheds of 7.16 mi" and less is related to rain amount and gaging ratio. The results are comhined with previous analy ses and a nomogram is presented to facilitate estimates of error for gaging ratios of 0.1 to 1000 mi" per gage over a range of rainfall amounts and geographic locutions in the Middle \Vest. The possihility of further generalization of the results is discussed.
Corn grown on plasticcovered monolith lysimeters at Coshocton showed that a very good crop was produced using only the water stored in the soil. A yield of 125 bush els per acre was obtained by using only 8.5 inches of
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