Effects of NRCS Conservation Practices - National

Diversion Code: 362

Units: ft.

C F R P Pr FS D O AL

Soil Erosion Effect Rationale

Soil Erosion - Sheet and Rill Erosion 1

Soil Erosion - Wind Erosion 0

Soil Erosion - Ephemeral Gully Erosion 2

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 2

 Excess Water - Drifted Snow 0

Insufficient Water

 Insufficient Water - Inefficient Use of Irrigation Water 2

 Insufficient Water - Inefficient Moisture Management 2

Water Quality Degradation

 Pesticides in Surface Water 1

 Pesticides in Groundwater 1

 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 1 

 Excess Pathogens and Chemicals from Manure, Bio-solid 0 

The action diverts water from the pesticide application site.

The action diverts water from the pesticide application site.

Diversions will trap some sediment, reducing the amount of sediment-adsorbed nutrients delivered off-site. Because diversions 

concentrate overland flows, there can be an increase in solubles offsite.

The action increases infiltration which may provide transport for nutrients.

Not Applicable

Not Applicable

Enables better runoff management

Not Applicable

Intercepts shallow subsurface flows.

Not Applicable

May help capture and reuse runoff.

May collect or direct water for water-spreading or water-harvesting systems. 

Not Applicable

Not Applicable

Not Applicable

Seepage may increase due to temporary storage behind the diversion.

Water is diverted and prevented from ponding or flooding.

A channel generally constructed across the slope with a supporting ridge on the lower side.

Not Applicable

A channel across the slope reduces the slope length and the opportunity for runoff water to detach soil particles. 

Not Applicable

A channel constructed across the slope intercepts surface flow and decreases soil detachment by water. 

Overland flow is diverted from gully.

Reduces overland flow to stream.

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 2

 Elevated Water Temperature 0

 Petroleum, Heavy Metals and Other Pollutants Transporte 1

 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 1

 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

Not Applicable

Not Applicable

Not Applicable

Not Applicable

Not Applicable

Not Applicable

Not Applicable

Not Applicable

Not Applicable

Not Applicable

Water is managed to optimize moisture requirements for plants.

Not Applicable

Not Applicable

Not Applicable

Not Applicable

Diversions collect and slow run-off to a non-erosive velocity.

The action controls surface erosion and surface water movement.

Controlled runoff reduces erosion and heavy metals attached to associated sediment.