|
Watershed 34
Physical Characteristics
STREAM: Bee Branch
AREA: 33 ha
FIRST RECORD: 10/31/1938
NOTCH: 120 V-notch
ELEV. at WEIR: 866 m
MAX ELEVATION: 1184 m
MAX DISCHARGE: 1.00 m3sec-1km-2
ASPECT: Southeast
Parameters from Swank and Crossly (1988)
Average Annual Nutrient (kg ha-1) and Water (cm) Budget:
|
|
Input
|
Output
|
Net Difference
|
|
Water
|
215
|
128
|
+87
|
|
NO3-N
|
3.22
|
0.04
|
+3.18
|
|
NH4-N
|
2.24
|
0.04
|
+2.20
|
|
PO4-P
|
0.09
|
0.02
|
+0.07
|
|
SO4-S
|
11.55
|
1.82
|
+9.73
|
|
Cl
|
6.6
|
7.37
|
-0.77
|
|
K
|
1.91
|
4.99
|
-3.08
|
|
Na
|
4.14
|
11.58
|
-7.44
|
|
Ca
|
3.9
|
8.82
|
-4.92
|
|
Mg
|
0.88
|
4.4
|
-3.52
|
|
SiO2
|
0.44
|
79.81
|
-79.37
|
Volume-Weighted Mean Annual Concentrations (mg L-1) 1973-83:
NO-3-N = 0
NH+4-N = 0
PO3-4-N = 0
Cl- = 0.57
K+ = 0.39
Na+ = 0.9
Ca2+ = 0.69
Mg2+ = 0.34
SO2-4-S = 0.14
SiO2 = 6.21
Some Physiographic and Mean Hydrologic Characteristics:
Land Slope (%) = 52
Record Length (yr) = 18
Mean Annual Precipitation (cm) = 200.94
Mean Annual Runoff (cm) = 117.47
Precipitation Runoff (cm) = 83.47
Hursh's Runoff Coefficient = Mean Annual Runoff/Mean Annual Precipitation
= 0.59
Initial Flow Rate (l/s/km2) = 36.57
Quickflow Before Peak (cm) = 1.83
Quickflow After Peak (cm) = 3.74
Delayed Flow (cm) = 111.91
Storm Duration (hr) = 11.1
Time To Peak (hr) = 3.95
Absolute Peak (l/s/km2) = 75.65
Recession Time (hr) = 7.15
Mean Runoff Events/Year = 80
Response Factor: (Qflow Before Pk + Qflow After Pk)/Mean Annual
Precipitation = 0.03
Hursh's Storm Runoff Ratio: (Qflow Before Pk + Qflow After Pk)/Mean Annual
Runoff = 0.05
Summary of Treatments
Control with mixed hardwoods stands remaining undisturbed since 1927.
|