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Watershed 2
Physical Characteristics
STREAM: Shope Branch
AREA: 12 ha
FIRST RECORD: 06/22/1934
NOTCH: 90 V-notch
ELEV. at WEIR: 709 m
MAX ELEVATION: 1004 m
MAX DISCHARGE: 2.41 m3sec-1km-2
ASPECT: SSE
Parameters from Swank and Crossly (1988)
Average Annual Nutrient (kg ha-1) and Water (cm) Budget:
|
|
Input |
Output |
Net Difference |
|
Water |
187 |
93 |
+94 |
|
NO3-N |
2.67 |
0.02 |
+2.65 |
|
NH4-N |
1.78 |
0.02 |
+1.76 |
|
PO4-P |
0.08 |
0.02 |
+0.06 |
|
SO4-S |
9.69 |
1.37 |
+8.32 |
|
Cl |
5.07 |
6.18 |
-1.11 |
|
K |
1.76 |
4.66 |
-2.90 |
|
Na |
3.17 |
11.43 |
-8.26 |
|
Ca |
3.63 |
5.45 |
-1.82 |
|
Mg |
0.76 |
3.05 |
-2.29 |
|
SiO2 |
0.55 |
77.25 |
-76.70 |
|
HCO3 |
1.27 |
40.44 |
-39.16 |
Volume-Weighted Mean Annual Concentrations 1973-83:
NO-3-N = 0 mg L-1
NH+4-N = 0 mg L-1
PO3-4-N = 0 mg L-1
Cl- = 0.66 mg L-1
K+ = 0.5 mg L-1
Na+ = 1.22 mg L-1
Ca2+ = 0.58 mg L-1
Mg2+ = 0.33 mg L-1
SO2- = 4-S 0.15 mg L-1
SiO2 = 8.27 mg L-1
Some Physiographic and Mean Hydrologic Characteristics:
Land Slope (%) = 60
Record Length (yr) = 37
Mean Annual Precipitation (cm) = 177.17
Mean Annual Runoff (cm) = 85.39
Precipitation Runoff (cm) = 91.78
Hursh's Runoff Coefficient: Mean Annual Runoff/Mean Annual Precipitation = 0.48
Initial Flow Rate (l/s/km2) = 24.52
Quickflow Before Peak (cm) = 2.22
Quickflow After Peak (cm) = 5.93
Delayed Flow (cm) = 77.2
Storm Duration (hr) = 13.78
Time To Peak (hr) = 4.2
Absolute Peak (l/s/km2) = 68.78
Recession Time (hr) = 9.57
Mean Runoff Events/Year = 66
Response Factor: (Qflow Before Pk + Qflow After Pk) / Mean Annual Precipitation = 0.05
Hursh's Storm Runoff Ratio: (Qflow Before Pk + Qflow After Pk)/Mean Annual Runoff = 0.1
Summary of Treatments
Controls with mixed hardwoods stands remaining undisturbed since 1927.
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