Minnesota Restorable Wetland Decision Support - Water Quality Benefits

This page last updated: 06/30/2014
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1. Overview
2. Data Quality
3. Data Organization
4. Coordinate System
5. Attributes
6. Distribution - Get Data
7. Metadata Reference

Section 1 Overview
Originator Natural Resources Research Institute, University of Minnesota
Title Minnesota Restorable Wetland Decision Support - Water Quality Benefits
Abstract The Water Quality Benefits Decision layer is an index of water quality risk across the landscape. The index predicts the risk of erosion and subsequent risk to water quality based on the potential for overland flow, the proximity to water, the soil erodibility potential, the slope length/gradient, and the rainfall potential. The grid (30 meter resolution) was developed using the following GIS inputs:

- Downstream flow distance to water - the estimated flow path distance to an open water body.
- Downstream soil erosion risk - the accumulated downstream soil erosion risk up to second order streams. The soil erosion risk was a previously developed grid input for the MNBWSR Environmental Benefits Index (EBI) and was calculated from components of the universal soil loss equation (USLE) including:
- Rainfall erosivity factor (R) - potential for high intensity high duration rainstorms that result in erosion
- Slope length slope gradient (LS) - measure of slope length and gradient (landscapes withsteeper and longer slopes are more likely to have erosion.)
- Soil erodibility factor (K) - the susceptibility of soil particles to detatch from the rest of the soil.
- Water quality risk - meaure of the risk to water quality based on the landscape's potential for overland flow and its proximity to water. The water quality risk grid was also developed as an input for the MNBWSR EBI using the grids:
- Stream Power Index (SPI) - grid that estimates the potential for overland flow based on slope and flow accumulation.
- Cost distance to water - weighted distance to water based on the surrounding elevations.

Funding
The development of this data was supported through the Clean Water, Land and Legacy Amendment.
Purpose The Water Quality Benefits Decision layer was developed with the purpose of identifying high erosion and high water quality risk areas that would benefit from having wetland restoration. The decision layer also could be used to identify low erosion or water quality risk areas that might benefit from wetland protection. The decision layer predicts water quality benefits across the entire Minnesota extent.
Time Period of Content Date 06/30/2014
Currentness Reference
Progress Complete
Maintenance and Update Frequency None Planned
Spatial Extent of Data
Bounding Coordinates -97.555013
-89.102809
49.550264
43.267894
Place Keywords
Theme Keywords Water quality, soil erosion, restorable wetlands, environment
Theme Keyword Thesaurus
Access Constraints
Use Constraints
Contact Person Information Catalog Manager,
Natural Resources Research Institute, University of Minnesota
5013 Miller Trunk Highway
Duluth, MN  55803
Phone: 218-788-2694
Email: nrri-gis@d.umn.edu
Browse Graphic None available
Associated Data Sets

Section 2 Data Quality
Attribute Accuracy
Logical Consistency
Completeness
Horizontal Positional Accuracy
Lineage

Section 3 Spatial Data Organization (not used in this metadata)

Section 4 Coordinate System
Horizontal Coordinate Scheme Universal Transverse Mercator
UTM Zone Number 15
Horizontal Datum NAD83
Horizontal Units meters
Cell Width 30
Cell Height 30

Section 5 Attributes
Overview
Detailed Citation
Table Detail:

Section 6 Distribution
Publisher Natural Resources Research Institute, University of Minnesota
Publication Date 06/30/2014
Contact Person Information Catalog Manager,
Natural Resources Research Institute, University of Minnesota
5013 Miller Trunk Highway
Duluth, MN  55803
Phone: 218-788-2694
Email: nrri-gis@d.umn.edu
Distributor's Data Set Identifier
Distribution Liability
Ordering Instructions
Online Linkage None available

Section 7 Metadata Reference
Metadata Date 06/30/2014
Contact Person Information Catalog Manager,
Natural Resources Research Institute, University of Minnesota
5013 Miller Trunk Highway
Duluth, MN  55803
Phone: 218-788-2694
Email: nrri-gis@d.umn.edu
Metadata Standard Name
Metadata Standard Version
Metadata Standard Online Linkage


This page last updated: 06/30/2014
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