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Layer: NutrientRemovalWetlands (ID:26)

View In:   Map Viewer

Name: NutrientRemovalWetlands

Display Field: unq_BMP_ID

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: Nutrient removal wetlands have the potential to remove 40-90% of the nitrate in tile drainage, depending on the nitrate load intercepted by the wetland (which varies with watershed size, land use, and precipitation) and the area of the wetland. The Nutrient Removal Wetland siting tool allows the user to sample locations along collective flow pathways for suitability of nutrient removal wetlands. Candidate sites can be ranked based on watershed and wetland areas, and topographic buffers. Further details on wetland siting criteria and discussion of factors impacting prioritization of candidate sites can be found in Tomer et al. (2013b). Potential impoundment locations (points) are generated along all collective flow paths within the drainage range established for nutrient removal wetlands (> 60 HA (~ 150 acres) --> maximum watershed drainage). A threshold is applied to the input D8 flow accumulation grid to delineate flow paths, which is converted to a polyline. Points are then generated continuously along this polyline at a user-specified distance interval (spacing). Locations are sorted by contributing area and most downstream sites are tested first. At each location, an impoundment is simulated in the DEM, creating both a pooled area (of user-specified height – measured from the top of the bank) and a vegetated buffer (of user-specified height – measured from the top of the wetland pool). The drainage area to each impoundment is delineated, and descriptive statistics are generated, including the size of the pooled area, the size of the buffer, and the ratio of pooled area to the amount of drainage that it receives. If a site is found to be suitable according to suitability criteria, the site is “kept” and added

Copyright Text: Analyst: ahyams

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Max. Scale: 0

Default Visibility: true

Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

Drawing Info:

HasZ: false

HasM: false

Has Attachments: false

Has Geometry Properties: true

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: OBJECTID

Unique ID Field:

Global ID Field:

Type ID Field:

Fields:
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Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 3/19/2024 8:27:34 PM

Schema Last Edit Date: 3/19/2024 8:27:34 PM

Data Last Edit Date: 3/19/2024 8:27:34 PM

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