Effects of NRCS Conservation Practices - National

Irrigation Reservoir Code: 436

Units: ac.

C F R P Pr FS D W O AL

Soil Erosion Effect Rationale

Soil Erosion - Sheet and Rill Erosion 0

Soil Erosion - Wind Erosion 0

Soil Erosion - Ephemeral Gully Erosion 0

Soil Erosion - Classic Gully Erosion 2

Soil Erosion - Streambank, Shoreline, Water Conveyance C 1

Soil Quality Degradation

 Organic Matter Depletion 0

 Compaction 0

 Subsidence 0

 Concentration of Salts or Other Chemicals 0

Excess Water

 Excess Water - Seeps -1

 Excess Water - Runoff, Flooding, or Ponding 2

 Excess Water - Seasonal High Water Table -1

 Excess Water - Drifted Snow 0

Insufficient Water

 Insufficient Water - Inefficient Use of Irrigation Water 2

 Insufficient Water - Inefficient Moisture Management 0

Water Quality Degradation

 Pesticides in Surface Water 0

 Pesticides in Groundwater 0

 Nutrients in Surface water 0

 Nutrients in Groundwater -1

 Salts in Surface Water 0

 Salts in Groundwater 0

 Excess Pathogens and Chemicals from Manure, Bio-solid 0 

 Excess Pathogens and Chemicals from Manure, Bio-solid 0 

An irrigation water storage structure made by constructing a dam, embankment, pit, or tank.

Not Applicable

Not Applicable

Not Applicable

Not Applicable

Due to stabilization gully from embankment construction.

Reduced peak flows downstream from reservoir.

AL-Aso Land 

W-Water 

O-Other 

D-Developed 

FS-Farmstead 

Pr-Protected 

P-Pasture 

F-Forest 

R-Range 

C-Crop

Typical Landuse:

Seepage from reservoir.

Not Applicable

Storage water for irrigation can be used in amore timely fashion increasing efficiency.

Not Applicable

Not Applicable

Not Applicable

Not Applicable

Possible seepage from Reservoir.

Peak flows are reduced. 

Not Applicable

Not Applicable

Not Applicable

Nutrients impounded could contaminate groundwater.

Not Applicable

Not Applicable

May increase because of aquatic animal feed or decaying vegetation.

Not Applicable
 Excessive Sediment in Surface Water 2

 Elevated Water Temperature 0

 Petroleum, Heavy Metals and Other Pollutants Transporte 0

 Petroleum, Heavy Metals and Other Pollutants Transporte 0

Air Quality Impacts

 Emissions of Particulate Matter (PM) and PM Precursors 0

 Emissions of Ozone Precursors 0

 Emissions of Greenhouse Gases (GHGs) 0

 Objectionable Odors 0

Degraded Plant Condition

 Undesirable Plant Productivity and Health 2

 Inadequate Structure and Composition 0

 Excessive Plant Pest Pressure 0

 Wildfire Hazard, Excessive Biomass Accumulation 0

Fish and Wildlife - Inadequate Habitat

 Inadequate Habitat - Food 2

 Inadequate Habitat - Cover/Shelter -1

 Inadequate Habitat - Water 0

 Inadequate Habitat - Habitat Continuity (Space) -1

Livestock Production Limitation

 Inadequate Feed and Forage 0

 Inadequate Shelter 0

 Inadequate Water 4

Inefficient Energy Use

 Equipment and Facilities 0

 Farming/Ranching Practices and Field Operations 2

CPPE Practice Effects: 0 No Effect

5 Substantial Improvement -1 Slight Worsening

4 Moderate to Substantial Improvement -2 Slight to Moderate Worsening

3 Moderate Improvement -3 Moderate Worsening

2 Slight to Moderate Improvement -4 Moderate to Substantial Worsening

1 Slight Improvement -5 Substantial Worsening

Not Applicable

Sediment is trapped as water velocity is reduced.

Not Applicable

Not Applicable

Reservoirs provide food for some fish and wildlife. 

Not Applicable

Not Applicable

Not Applicable

Not Applicable

Increased water availability and access enhances plant growth, health and vigor.

Not Applicable

Not Applicable

Not Applicable

Reservoirs can also provide stock water.

Not Applicable

Allows for off-peak or night time irrigation, will can result in reduced energy use for pumping.

Any cover is eliminated in the area used for the reservoir.

Reservoirs provide water for wildlife; however entrapment, especially of fish and salamanders, as waters recede or are withdrawn.

Reservoirs reduce existing space used by wildlife.

Not Applicable

Not Applicable