TABLE OF CONTENTS

Environmental Advisory Council

Grant County Commissioners

Grant SWCD Supervisors

Executive Summary


Priority Concerns (PDF File)
  • Assessment of 3 Priority Concerns
  • Shoreland Classification
  • Surface Water Use

Goals and Objectives (PDF File)
  • Priority Concern 1
  • Priority Concern 2
  • Priority Concern 3

Implementation Schedule (PDF File)
  • Acronyms for Cooperators
  • Priority Concern 1
  • Priority Concern 2
  • Priority Concern 3

Appendix A: Priority Concerns Scoping Document (PDF File)
  • Introduction
  • Priority Concerns
    • Identification Process
    • Results
    • Written Responses Received
  • Summary

Appendix B: Local Government Environmental Assistance Network

  • Long Term Hydrologic Impact Assessment



Water Management Plan prepared by the Grant County Environmental Advisory Council and the Grant Soil and Water Conservation District

Results Page
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SUMMARY OF SCENARIOS
State: Minnesota
County: Grant
Land Use Hydrologic Soil Group
Current
acres
Scenario 1

Scenario 2
Grass/Pasture B 40 0 0
Low Density Residential B 0 40 0
Commercial B 0 0 40


RUNOFF RESULTS
Avg. Annual Runoff Volume (acre-ft)
Land Use Current Scenario 1 Scenario 2
Grass/Pasture 1.22 0 0
Low Density Residential 0 3.08 0
Commercial 0 0 23.80
Total Annual Volume (acre-ft) 1.22 3.08 23.80

Avg. Annual Runoff Depth (in) 
Current Scenario 2 Scenario 3
0.36 0.92 7.14

Avg. Runoff Depth by Landuse 
Land Use Hydrologic Soil group Curve Number Runoff Depth (in)
Grass/Pasture B 61 0.37
Low Density Residential B 70 0.93
Commercial B 92 7.17
Average Annual Rainfall Depth (in) 24.39


NONPOINT SOURCE POLLUTANT RESULTS


Nitrogen (lbs) 
Land Use Current Scenario 1 Scenario 2
Grass/Pasture 2 0 0
Low Density Residential 0 15 0
Commercial 0 0 86
Total 2 15 86



Phosphorous (lbs) 
Land Use Current Scenario 1 Scenario 2
Grass/Pasture 0.033 0 0
Low Density Residential 0 4 0
Commercial 0 0 20
Total 0.033 4 20



Suspended Solids (lbs) 
Land Use Current Scenario 1 Scenario 2
Grass/Pasture 3 0 0
Low Density Residential 0 344 0
Commercial 0 0 3599
Total 3 344 3599



Lead (lbs) 
Land Use Current Scenario 1 Scenario 2
Grass/Pasture 0.016 0 0
Low Density Residential 0 0.075 0
Commercial 0 0 0.843
Total 0.016 0.075 0.843



Copper (lbs) 
Land Use Current Scenario 1 Scenario 2
Grass/Pasture 0.033 0 0
Low Density Residential 0 0.075 0
Commercial 0 0 0.940
Total 0.033 0.075 0.94



Zinc (lbs) 
Land Use Current Scenario 1 Scenario 2
Grass/Pasture 0.020 0 0
Low Density Residential 0 0.673 0
Commercial 0 0 11
Total 0.02 0.673 11



Cadmium (lbs) 
Land Use Current Scenario 1 Scenario 2
Grass/Pasture 0.003 0 0
Low Density Residential 0 0.006 0
Commercial 0 0 0.062
Total 0.003 0.006 0.062



Chromium (lbs) 
Land Use Current Scenario 1 Scenario 2
Grass/Pasture 0.025 0 0
Low Density Residential 0 0.017 0
Commercial 0 0 0.648
Total 0.025 0.017 0.648



Nickel (lbs) 
Land Use Current Scenario 1 Scenario 2
Grass/Pasture 0 0 0
Low Density Residential 0 0.084 0
Commercial 0 0 0.765
Total 0 0.084 0.765



BOD (lbs) 
Land Use Current Scenario 1 Scenario 2
Grass/Pasture 1 0 0
Low Density Residential 0 214 0
Commercial 0 0 1491
Total 1 214 1491



COD (lbs) 
Land Use Current Scenario 1 Scenario 2
Grass/Pasture 0 0 0
Low Density Residential 0 416 0
Commercial 0 0 7523
Total 0 416 7523



Oil & Grease (lbs) 
Land Use Current Scenario 1 Scenario 2
Grass/Pasture 0 0 0
Low Density Residential 0 14 0
Commercial 0 0 583
Total 0 14 583



Fecal Coliform (millions of coliform) 
Land Use Current Scenario 1 Scenario 2
Grass/Pasture 3 0 0
Low Density Residential 0 764 0
Commercial 0 0 2034
Total 3 764 2034



Fecal Strep (millions of coliform) 
Land Use Current Scenario 1 Scenario 2
Grass/Pasture 0 0 0
Low Density Residential 0 2141 0
Commercial 0 0 5306
Total 0 2141 5306




These results were generated by the L-THIA (Long-Term Hydrologic Impact Assessment) model at "http://www.ecn.purdue.edu/runoff/lthianew" Results Page
LGEAN Home PageLGEAN Home PageLGEAN Home PageLGEAN Home PageLGEAN Home Page
SUMMARY OF SCENARIOS
State: Minnesota
County: Grant
Land Use Hydrologic Soil Group
Current
acres
Scenario 1

Scenario 2
Grass/Pasture B 40 0 0
High Density Residential B 0 40 0
Agricultural B 0 0 40


RUNOFF RESULTS
Avg. Annual Runoff Volume (acre-ft)
Land Use Current Scenario 1 Scenario 2
Grass/Pasture 1.22 0 0
High Density Residential 0 11.78 0
Agricultural 0 0 4.88
Total Annual Volume (acre-ft) 1.22 11.78 4.88

Avg. Annual Runoff Depth (in) 
Current Scenario 2 Scenario 3
0.36 3.53 1.46

Avg. Runoff Depth by Landuse 
Land Use Hydrologic Soil group Curve Number Runoff Depth (in)
Grass/Pasture B 61 0.37
High Density Residential B 85 3.55
Agricultural B 75 1.47
Average Annual Rainfall Depth (in) 24.39


NONPOINT SOURCE POLLUTANT RESULTS


Nitrogen (lbs) 
Land Use Current Scenario 1 Scenario 2
Grass/Pasture 2 0 0
High Density Residential 0 58 0
Agricultural 0 0 58
Total 2 58 58



Phosphorous (lbs) 
Land Use Current Scenario 1 Scenario 2
Grass/Pasture 0.033 0 0
High Density Residential 0 18 0
Agricultural 0 0 17
Total 0.033 18 17



Suspended Solids (lbs) 
Land Use Current Scenario 1 Scenario 2
Grass/Pasture 3 0 0
High Density Residential 0 1316 0
Agricultural 0 0 1422
Total 3 1316 1422



Lead (lbs) 
Land Use Current Scenario 1 Scenario 2
Grass/Pasture 0.016 0 0
High Density Residential 0 0.289 0
Agricultural 0 0 0.019
Total 0.016 0.289 0.019



Copper (lbs) 
Land Use Current Scenario 1 Scenario 2
Grass/Pasture 0.033 0 0
High Density Residential 0 0.289 0
Agricultural 0 0 0.019
Total 0.033 0.289 0.019



Zinc (lbs) 
Land Use Current Scenario 1 Scenario 2
Grass/Pasture 0.020 0 0
High Density Residential 0 2 0
Agricultural 0 0 0.212
Total 0.02 2 0.212



Cadmium (lbs) 
Land Use Current Scenario 1 Scenario 2
Grass/Pasture 0.003 0 0
High Density Residential 0 0.024 0
Agricultural 0 0 0.013
Total 0.003 0.024 0.013



Chromium (lbs) 
Land Use Current Scenario 1 Scenario 2
Grass/Pasture 0.025 0 0
High Density Residential 0 0.067 0
Agricultural 0 0 0.132
Total 0.025 0.067 0.132



Nickel (lbs) 
Land Use Current Scenario 1 Scenario 2
Grass/Pasture 0 0 0
High Density Residential 0 0.321 0
Agricultural 0 0 0
Total 0 0.321 0



BOD (lbs) 
Land Use Current Scenario 1 Scenario 2
Grass/Pasture 1 0 0
High Density Residential 0 818 0
Agricultural 0 0 53
Total 1 818 53



COD (lbs) 
Land Use Current Scenario 1 Scenario 2
Grass/Pasture 0 0 0
High Density Residential 0 1589 0
Agricultural 0 0 0
Total 0 1589 0



Oil & Grease (lbs) 
Land Use Current Scenario 1 Scenario 2
Grass/Pasture 0 0 0
High Density Residential 0 54 0
Agricultural 0 0 0
Total 0 54 0



Fecal Coliform (millions of coliform) 
Land Use Current Scenario 1 Scenario 2
Grass/Pasture 3 0 0
High Density Residential 0 2919 0
Agricultural 0 0 1571
Total 3 2919 1571



Fecal Strep (millions of coliform) 
Land Use Current Scenario 1 Scenario 2
Grass/Pasture 0 0 0
High Density Residential 0 8174 0
Agricultural 0 0 0
Total 0 8174 0




These results were generated by the L-THIA (Long-Term Hydrologic Impact Assessment) model at http://www.ecn.purdue.edu/runoff/lthianew
This website was last updated on February 7, 2017.