RESET
Subwatershed Nitrate-N Percent Contribution
0 - 5 %
5 - 10 %
10 - 20 %
20 - 25 %
> 25 %
Gross Erosion
< 0.5 t/ac/yr
0.5-2 t/ac/yr
2-3.5 t/ac/yr
3.5-5 t/ac/yr
> 5 t/ac/yr
Phosphorus Index Risk Assessment
Very Low
Low
Medium
High
Very High
Subwatershed Nitrate-N Percent Contribution
Gross Erosion
Phosphorus Index Risk Assessment
Flood Frequency
None
Rare
Occasionally
Frequently
Ponded
Drainage Class
Very Poor
Poor
Somewhat Poor
Moderate / Well
Excessive
Soil Class
Clarion 138B
Buckney 1636
Canisteo 507
Downs 162D2
Gara-Armstrong 993E2
Ackmore-Colo 5B
Coland 135
Tama 120C2
Nicollet 55
Okoboji 90
Tama 120B
Muscatine 119
Nodaway 220
Flood Frequency
Strategic Wetlands
Subwatershed Boundaries
Drainage Class
Soil Class
Corn Grain Yield Key
0 Mg/ha/yr
11.2-13.2 Mg/ha/yr
13.2-13.9 Mg/ha/yr
13.9-15.1 Mg/ha/yr
Corn Grain Precipitation Factor
At Different Precipitation Levels
| Yield Type Precipitation Factor | Precipitation Level (in)/yr |
|---|---|
| 0.75 | 24.6 |
| 0.90 | 28.2 |
| 1.00 | 30.4 |
| 1.00 | 32.2 |
| 1.00 | 34.3 |
| 0.90 | 36.5 |
| 0.75 | 45.1 |
Soybean Yield Key
0 Mg/ha/yr
3.50-3.90 Mg/ha/yr
3.90-4.30 Mg/ha/yr
4.30-4.70 Mg/ha/yr
Soybean Precipitation Factor
At Different Precipitation Levels
| Yield Type Precipitation Factor | Precipitation Level (in)/yr |
|---|---|
| 0.75 | 24.6 |
| 0.90 | 28.2 |
| 1.00 | 30.4 |
| 1.00 | 32.2 |
| 1.00 | 34.3 |
| 0.90 | 36.5 |
| 0.75 | 45.1 |
Mixed Fruit and Vegetable Yield Key
6.58 Mg/ha/yr
13.98 Mg/ha/yr
14.80 Mg/ha/yr
16.45 Mg/ha/yr
Mixed Fruit and Vegetable Precipitation Factor
At Different Precipitation Levels
| Yield Type Precipitation Factor | Precipitation Level (in)/yr |
|---|---|
| 1.00 | 24.6 |
| 1.00 | 28.2 |
| 1.00 | 30.4 |
| 1.00 | 32.2 |
| 1.00 | 34.3 |
| 0.90 | 36.5 |
| 0.75 | 45.1 |
Cattle Yield Key
3.4-4.0 animals/acre/yr
4.0-5.4 animals/acre/yr
5.4-6.1 animals/acre/yr
6.1-6.7 animals/acre/yr
Cattle Precipitation Factor
At Different Precipitation Levels
| Yield Type Precipitation Factor | Precipitation Level (in)/yr |
|---|---|
| 0.95 | 24.6 |
| 1.00 | 28.2 |
| 1.00 | 30.4 |
| 1.00 | 32.2 |
| 1.00 | 34.3 |
| 1.00 | 36.5 |
| 0.95 | 45.1 |
Alfalfa Yield Key
8.07-9.42 Mg/ha/yr
9.42-12.6 Mg/ha/yr
12.6-14.6 Mg/ha/yr
14.6-15.5 Mg/ha/yr
Alfalfa Precipitation Factor
At Different Precipitation Levels
| Yield Type Precipitation Factor | Precipitation Level (in)/yr |
|---|---|
| 0.95 | 24.6 |
| 1.00 | 28.2 |
| 1.00 | 30.4 |
| 1.00 | 32.2 |
| 1.00 | 34.3 |
| 1.00 | 36.5 |
| 0.95 | 45.1 |
Grass Hay Yield Key
8.07-9.42 Mg/ha/yr
9.42-12.6 Mg/ha/yr
12.6-14.6 Mg/ha/yr
14.6-15.5 Mg/ha/yr
Grass Hay Precipitation Factor
At Different Precipitation Levels
| Yield Type Precipitation Factor | Precipitation Level (in)/yr |
|---|---|
| 0.95 | 24.6 |
| 1.00 | 28.2 |
| 1.00 | 30.4 |
| 1.00 | 32.2 |
| 1.00 | 34.3 |
| 1.00 | 36.5 |
| 0.95 | 45.1 |
Switchgrass Yield Key
4.39-5.29 Mg/ha/yr
5.29-5.83 Mg/ha/yr
5.83-6.25 Mg/ha/yr
6.25-6.61 Mg/ha/yr
Switchgrass Precipitation Factor
At Different Precipitation Levels
| Yield Type Precipitation Factor | Precipitation Level (in)/yr |
|---|---|
| 0.95 | 24.6 |
| 1.00 | 28.2 |
| 1.00 | 30.4 |
| 1.00 | 32.2 |
| 1.00 | 34.3 |
| 1.00 | 36.5 |
| 0.95 | 45.1 |
Wood Yield Key
0.50-0.73 m3/ha/yr
0.73-1.02 m3/ha/yr
1.02-1.43 m3/ha/yr
1.43-1.60 m3/ha/yr
Wood Precipitation Factor
At Different Precipitation Levels
| Yield Type Precipitation Factor | Precipitation Level (in)/yr |
|---|---|
| 1.00 | 24.6 |
| 1.00 | 28.2 |
| 1.00 | 30.4 |
| 1.00 | 32.2 |
| 1.00 | 34.3 |
| 1.00 | 36.5 |
| 1.00 | 45.1 |
Short-Rotation Woody Biomass Yield Key
608.6 tons/acre/yr
Short-Rotation Woody Biomass Yield Precipitation Factor
At Different Precipitation Levels
| Yield Type Precipitation Factor | Precipitation Level (id)/yr |
|---|---|
| 1.00 | 24.6 |
| 1.00 | 28.2 |
| 1.00 | 30.4 |
| 1.00 | 32.2 |
| 1.00 | 34.3 |
| 1.00 | 36.5 |
| 1.00 | 45.1 |
