Laserfiche WebLink
<br />7 <br /> <br /> <br />1l~?3~3 <br />"..' j ,-" <br /> <br />Approach <br /> <br />Sampling in Kenney Reservoir was designed to measure the vertical and <br />lateral differences in water-quality characteristics that occurred in the <br />reservoir during spring, summer, and fall. Samples collected from site 1 near <br />the dam (fig. 2) were from the deepest (40 to 50 ft) part of the reservoir. <br />Water-quality characteristics at this site represented reservoir water that <br />generally had a maximum residence time for given inflow rates (table 2). <br /> <br />Site 2 near the inlet was established in the north end of the reservoir <br />where the White River enters Kenney Reservoir. Water depth at this site <br />originally was measured at 14 ft in April 1985. Subsequent measurements of <br />depths after the spring runoff in 1985 generally were 10 ft or less. In 1987, <br />measurements of depth at site 2 ranged from 4 to 6 ft. Decreases in depth at <br />this site were attributed to suspended-sediment deposition and redistribution <br />of sediment from the White River. Water-quality characteristics at site 2 <br />represented water that generally had a residence time in the reservoir of less <br />than 24 hours. <br /> <br />Table 2.--Theoretical hgdraulic residence time and capacitg- <br />inflow ratios for Kenneg Reservoir <br /> <br /> [ft3js, cubic feet per second; acre-ft, acre-feet] <br />Inflow- Discharge, Annual Approximate Capacity- <br />outflow residence <br />discharge log base 10 discharge time inflow <br />(ft3js) (ft3js) (acre-ft) (days) 1 ratio2 <br />100 2.0000 72,450 70 0.190 <br />200 2.3010 144,900 35 .095 <br />300 2.4771 217,350 23 .063 <br />400 2.6021 289,800 17 .048 <br />500 2.6990 362,250 14 .038 <br />600 2.7782 434,700 12 .032 <br />700 2.8451 507,150 9.9 .027 <br />800 2.9031 579,600 8.7 .024 <br />900 2.9542 652,050 7.7 .021 <br />1,000 3.0000 724,500 7.0 .019 <br />2,000 3.3010 1,449,000 3.5 .010 <br />3,000 3.4771 2,173,500 2.3 .006 <br />4,000 3.6021 2,898,000 l.7 .005 <br />5,000 3.6990 3,622,500 1.4 .004 <br />6,000 3.7782 4,347,000 1.2 .003 <br />7,000 3.8451 5,071,500 .99 .003 <br />lApproximate residence time, in days, is equal to the reservoir capacity <br />(13,800 acre-ft) divided by the sum of 1.98 times the inflow-outflow discharge. <br />2Capacity-inflow ratio is equal to the reservoir capacity (13,800 acre-ft) <br />divided by annual discharge. <br />