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Table 21. Nutrient and suspended-sediment monthly load and runoff summary statistics (sum, median, minimum, and maximum), percent change in sums between stations, and monthly median units/yields between stations for period of comparison (water years 1991-98) and complete period of record for three LTIMP sampling stations in the Trout Creek watershed, South Lake Tahoe area, Lake Tahoe Basin, Nevada
[Abbreviations: acre-ft, acre-feet; kg, kilogram; kg/km2, kilogram per square kilometer; kg/mo, kilogram per month; acre-ft/ mi2, acre-feet per square mile. Symbol: —, not applicable. Average annual runoff for Trout Creek at South Lake Tahoe is taken from Trout Creek near Tahoe Valley, upstream]
|
|
Average annual runoff |
Dissolved nitrite |
Dissolved |
Total |
Soluble |
Total |
Biologically reactive iron |
Suspended sediment |
|---|---|---|---|---|---|---|---|---|
|
Trout Creek at South Lake Tahoe |
||||||||
|
Sum |
-- |
2,890 | 656 | 65,900 | 2,770 | 13,800 | 201,000 | 10,300,000 |
|
Median |
27,300 (average) |
23.2 | 4.92 | 324 | 15.4 | 65.2 | 1,060 | 35,200 |
|
Maximum |
-- |
119 | 21.4 | 4,300 | 168 | 860 | 13,000 | 820,000 |
|
Minimum |
-- |
4.16 | 1.68 | 62.7 | 4.26 | 12.75 | 190 | 4,480 |
|
Percent change in sum |
29 |
47 |
56 |
40 |
37 |
41 |
44 |
56 |
|
Yield (kg/km2) |
-- |
.22 |
.05 |
3.09 |
.15 |
.62 |
10.1 |
335 |
|
Unit runoff (acre-ft/mi2) |
744 |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
|
Trout Creek at Pioneer Trail |
||||||||
|
Sum |
-- |
1,520 | 287 | 39,900 | 1,750 | 8,170 | 112,000 | 4,680,000 |
|
Median |
19,400 (average) |
8.84 | 1.68 | 163 | 9.78 | 31.1 | 350 | 7,900 |
|
Maximum |
-- |
72.4 | 13.2 | 3,100 | 107 | 728 | 11,300 | 572,000 |
|
Minimum |
-- |
1.09 | .58 | 30.1 | 2.93 | 8.48 | 78.0 | 500 |
|
Percent change in sum |
39 |
37 |
25 |
37 |
38 |
39 |
41 |
45 |
|
Yield (kg/km2) |
-- |
.15 |
.03 |
2.73 |
.16 |
.52 |
5.85 |
132 |
|
Unit runoff (acre-ft/mi2) |
840 |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
|
Trout Creek at U.S. Forest Service Rd. 12N01 |
||||||||
|
Sum |
|
464 | 121 | 15,300 | 709 | 2,800 | 29,700 | 2,000,000 |
|
Median |
8,690 (average) |
2.77 | .71 | 54.1 | 4.40 | 10.8 | 62.0 | 2,700 |
|
Maximum |
-- |
26.0 | 7.05 | 1,590 | 43.7 | 335 | 4,630 | 391,000 |
|
Minimum |
-- |
1.09 | .28 | 16.3 | 1.53 | 4.22 | 17.6 | 279 |
|
Percent change in sum |
32 |
16 |
19 |
23 |
25 |
20 |
15 |
19 |
|
Yield (kg/km2) |
-- |
.14 |
.04 |
2.82 |
.23 |
.56 |
3.23 |
141 |
|
Unit runoff (acre-ft/mi2) |
744 |
-- |
-- |
-- |
-- |
-- |
-- |
-- |