Effects of NRCS Conservation Practices - National

Vertical Drain Code: 630

Units: no.

C F R P Pr FS DL 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 1

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 4

 Excess Water - Seasonal High Water Table -2

 Excess Water - Drifted Snow 0

Insufficient Water

 Insufficient Water - Inefficient Use of Irrigation Water 0

 Insufficient Water - Inefficient Moisture Management 0

Water Quality Degradation

 Pesticides in Surface Water 0

 Pesticides in Groundwater -2

 Nutrients in Surface water 1

 Nutrients in Groundwater -2

 Salts in Surface Water 1

 Salts in Groundwater -1

 Excess Pathogens and Chemicals from Manure, Bio-solid 1 

 Excess Pathogens and Chemicals from Manure, Bio-solid -1 

Not Applicable

Water entering the drain may contain pesticide residues.

Nutrients in the water diverted into a vertical drain is kept out of surface water.

Water conveyed to subsurface strata may contain organics and nutrients.

Water containing salt could be diverted from a surface outlet to the subsurface.

Water containing soluble salts is outlet below the soil surface where it may reach groundwater.

Water diverted subsurface reduces surface runoff.

Water diverted to the subsurface may contain some pathogens.

Diversion of surface water to subsurface will increase any existing problems.

Not Applicable

Not Applicable

Not Applicable

Not Applicable

Surface water removal may result in increased oxidation of organic matter.

Not Applicable

Surface water introduced to strata below the zones conducive to seepage.

Surface and subsurface drainage diverted to underground strata and not available to surface problems. 

A well, pipe, pit, or bore in porous, underground strata into which drainage water can be discharged without contaminating 

groundwater resources.

Not Applicable

Not Applicable

Not Applicable

Not Applicable

Runoff is captured and discharged subsurface reducing erosion potential.

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 1

 Elevated Water Temperature 0

 Petroleum, Heavy Metals and Other Pollutants Transporte 1

 Petroleum, Heavy Metals and Other Pollutants Transporte -1

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 0

 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

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

Not Applicable

Water diverted to the subsurface may contain some heavy metals.

Water diverted subsurface will reduce surface water flows.

Diversion of drainage water subsurface removes water from surface flows.

Water diverted subsurface will reduce metal transport to surface waters.