WSP07706 - Laserfiche WebLink

Home Browse Search

'" z o >- ~ ci <( g '" Cl ~ o '" .:, w :; o 500.000 '" '" is -' :5 400,000 Z Z <( E2J Site 3A (Sites 1 and 2) . Site 3A to Site 3 . Site 3 to Site 4 ~ Site 4to Site 5 D Site 5 to Site 6 300,000 200,000 i..i.i..... ........ .......... ............ ..' ...... .... ....... Maximum ..' ---" .."'f""-- Minimum -- ",-- ///// ...----~ 3A 3 SITE 4 5 6 100,000 o 1976 1976 1977 1976 1979 1960 1981 1982 1983 1984 1985 1986 1987 1988 WATER YEAR Figure 24. Average and range of annual dissolved-solids loads for the North Fork (site 1), the South Fork (site 2), and the main stem of the White River (sites 3A-6), water years 1975-68, and annual dissolved- solids loads for segments of the White River between sites. Concentrations of organic nitrogen in the White River ranged from less than 0,16 mgIL at site 5 to 1.50 mgIL at site 6. Except for the small concentration range at site 2 (less than 0.20 to 0.50 mgIL), the general similarities of the data ranges for each site indicate that the sources of organic nitrogen in the basin were wide- spread. Conc.entrations of phosphorus in the White River were equal to or less than 0.03 mg/L in 45 of 51 sam- ples and less than 0.08 mgIL in 50 of 51 samples. A single concentration of 0.62 mgIL was measured at site 6 on June 23, 1987. The phosphorus concentration in a water sample collected the same day at site 5 was 0.05 mgIL. The large phosphorus concentration measured at site 6 probably was from a temporary, localized input that contained large concentrations of phosphorus. The phosphorus entered the White River upstream from site 6 and, perhaps, downstream from site 5. Although phosphorus concentrations in the White River generally were 0.03 mgIL or less, concen- trations occasionally exceeded 0.03 mgIL downstream from site 4. 52 Sediment Transport and Water-Quality Charscterlstlcs and Loads, White River, Northwestern Colorado, Water Years 1975-88