Effects of NRCS Conservation Practices - National

Irrigation Canal or Lateral Code: 320

Units: ft.

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 0

Soil Erosion - Streambank, Shoreline, Water Conveyance C 0

Soil Quality Degradation

 Organic Matter Depletion 0

 Compaction 0

 Subsidence 0

 Concentration of Salts or Other Chemicals 0

Excess Water

 Excess Water - Seeps 0

 Excess Water - Runoff, Flooding, or Ponding 2

 Excess Water - Seasonal High Water Table -2

 Excess Water - Drifted Snow 0

Insufficient Water

 Insufficient Water - Inefficient Use of Irrigation Water 5

 Insufficient Water - Inefficient Moisture Management 0

Water Quality Degradation

 Pesticides in Surface Water 0

 Pesticides in Groundwater 0

 Nutrients in Surface water -2

 Nutrients in Groundwater 0

 Salts in Surface Water 0

 Salts in Groundwater 0

 Excess Pathogens and Chemicals from Manure, Bio-solid -2 

 Excess Pathogens and Chemicals from Manure, Bio-solid 0 

Not Applicable

Not Applicable

Return flows from canals may deliver dissolved and sediment-attached nutrients to surface water.

Not Applicable

Not Applicable

Not Applicable

Return flows from canals may deliver possible contaminates to surface water

Not Applicable

May provide a water source for infiltration that will add to subsurface water.

Not Applicable

Canals transport water to areas of irrigation use.

Not Applicable

Not Applicable

Not Applicable

Not Applicable

Canal may provide outlet for seepage, however canals may provide a source of seepage.

The canal may intercept runoff and act as floodways.

A permanent channel constructed to convey irrigation water from the source of supply to one or more irrigated areas.

Not Applicable

A channel constructed across the slope may intercept runoff water and shorten the slope length. 

Not Applicable

A channel constructed across the slope may intercept runoff water. 

May prevent small amounts of erosion 

Not Applicable

AL-Aso Land 

W-Water 

O-Other 

D-Developed 

FS-Farmstead 

Pr-Protected 

P-Pasture 

F-Forest 

R-Range 

C-Crop

Typical Landuse:
 Excessive Sediment in Surface Water 0

 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 0

 Inadequate Habitat - Cover/Shelter 0

 Inadequate Habitat - Water 0

 Inadequate Habitat - Habitat Continuity (Space) 0

Livestock Production Limitation

 Inadequate Feed and Forage 0

 Inadequate Shelter 0

 Inadequate Water 0

Inefficient Energy Use

 Equipment and Facilities 0

 Farming/Ranching Practices and Field Operations 0

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

Not Applicable

Not Applicable

Vegetated canals may provide cover for fish.

Water will be temporarily available in the canal.

Not Applicable

Not Applicable

Not Applicable

Vegetated canals may provide food for fish.

Not Applicable

Not Applicable

Not Applicable

Not Applicable

Increased water availability enhances plant growth, health and vigor.

Not Applicable

Not Applicable

Not Applicable

Not Applicable

Not Applicable

Not Applicable

Canal could distribute water more efficiently or could increase return flows that deliver contaminates to surface water.