Click the 'Activate' button to activate the digitizer, then draw an area on the map where you would like to retrieve non-point source pollution data.

Digitizer: help


Project Name: help (for saving and organizing results)
Model(s) to use: HIT (for sediment loading from ag lands) help
L-THIA (for surface run-off volumes and pollutant loading) help
Saginaw RCPP
Pre-screening?		 help
Scale:help Include the upland contributing areas

(click on a column title for a description)

ID Acres


Click the 'Activate' button to activate the digitizer, then draw an area of land-cover change or a best-management practice (BMP) to see how erosion, sediment loading, runoff, or pollutant loading may change when compared to a best estimate of the current condition.

Digitizer: help

Project Name: help (for saving and organizing results)
Model(s) to use: HIT (for erosion and sediment loading from ag lands) help
L-THIA (for surface run-off volumes and pollutant loading) help

(click on a column title for a description)

ID HIT: LC Change/BMP L-THIA: LC Change/BMP Acres Cost/acre ($) C Factor K Factor LS Factor R Factor Surface Roughness Delivery Ratio


Click the 'Activate' button to activate the digitizer, then draw an area to see how erosion, sediment loading, runoff, or pollutant loading may change between two different land cover scenarios.

Digitizer: help


Project Name: help (for saving and organizing results)
Model(s) to use: HIT (for soil erosion and sediment loading from ag lands) help
L-THIA (for surface run-off volumes and pollutant loading) help

(click on a column title for a description)

Feature ID - Scenario HIT: LC Change/BMP L-THIA: LC Change/BMP Acres Cost/acre ($) C Factor K Factor LS Factor R Factor Surface Roughness Delivery Ratio


Click the 'Activate' button to activate the digitizer, then draw an area to see how erosion or sediment loading has changed from land cover conditions in 1800 to current conditions.

This option is currently only available for the Saginaw Basin.

Digitizer: help


Project Name: help (for organizing results)
Scale:help Include the upland contributing areas

(click on a column title for a description)
ID Acres


NOTE: Only available for Saginaw Basin

Click the 'Activate' button to activate the digitizer, then draw an area on the map where you would like to retrieve ground water recharge data.

Digitizer: help


Project Name: help (for saving and organizing results)
Options: Model agricultural tile drainage in recharge calculations help

(click on a column title for a description)

ID Acres


NOTE: Only available for Saginaw Basin

Click the 'Activate' button to activate the digitizer, then draw an area of land-cover change or a best-management practice (BMP) to see how ground water recharge may change when compared to a best estimate of the current condition.

Digitizer: help

Project Name: help (for saving and organizing results)
Options: Model agricultural tile drainage in recharge calculations help

(click on a column title for a description)

ID LC Change/BMP Acres Cost/acre ($) HSG Slope class


NOTE: Only available for Saginaw Basin

Click the 'Activate' button to activate the digitizer, then draw an area to see how ground water recharge may change between two different land cover scenarios.

Digitizer: help


Project Name: help (for saving and organizing results)
Options: Model agricultural tile drainage in recharge calculations help

(click on a column title for a description)

ID LC Change/BMP Acres Cost/acre ($) HSG Slope class


Click the 'Activate' button to activate the digitizer, then draw an area to estimate costs and revenues of corn production in that location.

Not displaying properly? Try clearing your browser's cache.
Digitizer: help

Use the "Map Layers" window pane to view a map of the dominant hydrologic soil groups, and use that to guide your selection of soil type below.
(click on a column title for a description)

ID Land Practice Acres Soil Type Fixed Costs ($/ac) Variable Costs ($/ac) Expected Yield (bu/ac) Yield Price ($/bu) Buffer Strip Size (sq. ft)


Select watersheds to gather data on. You can select watersheds interactively on the map, by searching for a watershed name, or by searching for a hydrologic unit code (HUC).

Watershed selection scale:

Map Selection:
Press the 'Activate Watershed Map Selection' button; then specify the selection tool shape and watershed scale.

selection tool shape:


Attribute Query:
Type in a watershed name or HUC, specify the appropriate attribute type, and click the 'Find Watershed(s)' button.
Example queries:
"Maple River" (find all watersheds with the phrase 'Maple River' in their name)
"04050005" (find the watershed with that HUC)
"04050005%" (find all watersheds whose HUC begins with those numbers)

Query against: Query text:
   

Use the options below to view erosion, sediment loading, or BMP targeting impacts in the selected watersheds.
Current number of selected watersheds:

dataset:   sediment
  erosion
output:   totals (tons/yr)
  rates(tons/acre/yr)
BMPs:
(optional)		   no-till on worst % of sediment contributing areas, at a cost of $ / acre.
  mulch-till on worst % of sediment contributing areas, at a cost of $ / acre.
  grass on worst % of sediment contributing areas, at a cost of $ / acre.
  30-foot grass buffer on all streams adjacent to ag land,
Default costs are based on Michigan 2013 EQIP payments


Watershed-scale L-THIA data is not available yet.

Use the options below to view run-off or pollutant loading modeled by L-THIA in the selected watersheds.
Current number of selected watersheds:

dataset:   Run-off
  Total Nitrogen
  Total Phosphorus
  Total Suspended Solids
  Total Lead
  Total Copper
  Total Zinc
output:   totals (lbs/yr)
  rates(lbs/acre/yr)


Shade the selected watersheds by a numeric attribute in the 'Selected Watersheds and Data' tab.

Attributes:
Number of classes:  quantiles
equal intervals 		Watershed Legend:
Low
↓
High











Report Name:
Author:
Report Date:
Location Description:
Acres:
Include Saginaw RCPP Scoring?:






Are you sure you want to delete the ?

All associated will be deleted as well.

Select the projects and associated scenarios to load map features and scenario results

help
(click to select)
Name:
help
(click to select)
Name:
Field Parameters: View/edit in Field-scale Analysis window.
Installed?:help
yes
no (hypothetical)
 Installation Program:help
Install date: Contract end date:
Contract Time Left:
Capturing Ground Water Recharge:help
yes
no
 Ground Water Recharge Offsets Credited To:help
Notes:
Login to your account to view your saved projects.
username:
password:
Fill out the form below to create a new account.

first name:
last name:
username:
password:
re-type password:
email:
ogrinization:
Edit the fields below and press the Save Changes button
below to save the edits to your account.

first name:
last name:
username:
password:
re-type password:
email:
ogrinization:
To delete your account, and all associated data (including digitized map features, BMPs, scenarios,
and reports), re-type your password and press the Delete button below. You will be asked to
confirm you request once more.

password:
Provide the email address associated with the account and click the Reset button
below.

email:


  


Are you sure you want to delete the report ?


Are you sure you want to delete the account ?

This will delete all data associated with this account (digitized map features, BMPs, scenarios, reports, etc.).

If your account is successfully deleted, you will be logged out of the system.


HIT data to include:
erosion
sediment
Recharge data to include:
Volume (gallons/yr.)
Depth (in./yr.)
Identify Results of Digitized Feature
Upland contributing area for the project run
Acres:
The Great Lakes Watershed Management System (GLWMS) is an on-line tool that allows users to evaluate non-point source (NPS) pollution model estimates at watershed and field scales. The system links two water quality models, High Impact Targeting (HIT) from the Institute of Water Research at Michigan State University, and the Long Term Hydrologic Impact Assessment (L-THIA) from Purdue University's Department of Agricultural and Biological Engineering. HIT estimates sediment loading from agricultural lands to nearby streams; L-THIA estimates run-off volumes and pollutant loads.

The GLWMS allows users to view HIT and L-THIA estimates at watershed scales, and conduct field scale scenario evaluations of land cover changes or best management practices (BMPs).

The system is currently available for the priority basins of the EPA's Great Lakes Restoration Initiative: the Fox River Basin of Wisconsin, the Saginaw River Basin of Michigan, the Maumee River Basin of Ohio, and the Genessee River Basin of New York.

Zoom to an area of interest and utilize the tabs below to get started.
Click on a map layer name for a description.

To analyze data at the field level, or run land-cover change scenario models click on 'Field-scale Analysis'.

To analyze sediment and nutrient loading at watershed scales click on 'Watershed-scale Analysis'.











About the Models

Estimates of non-point source pollution in the GLWMS are based upon two models, High Impact Targeting (HIT) and Long-term Hydrologic Impact Assessment (L-THIA).

Erosion and sediment loading are based on HIT, which is a combination of two sub-models, RUSLE and SEDMOD. RUSLE estimates annual soil erosion caused by rainfall, and SEDMOD estimates the fraction of eroded soil that reaches the stream network. HIT estimates erosion and sediment for each 100 square-meter pixel on the landscape, using inputs from the USDA’s Cropland Data Layer to simulate land cover and crop rotations, USDA’s SSURGO soil surveys to estimate soil texture and erodibility, USGS digital elevation models to estimate surface slope and run-off paths, USGS’ National Hydrography Dataset for stream locations, Purdue’s Conservation Technology Information Center (CTIC) county-scale surveys to estimate tillage practices, and Oregon State University’s PRISM dataset for precipitation. A summary of how HIT is employed within the GLWMS is available here. You can also read detailed metadata for how HIT data was generated here: erosion and sediment.

Click here to read about the uncertainty in HIT model outputs.

L-THIA is a hydrologic model that estimates pollutant runoff using curve numbers based on land-cover and soil relationships, and published pollution concentrations. Though L-THIA’s approach is fundamentally different than HIT’s, it utilizes similar inputs of land cover, USDA SSURGO soil surveys, and USGS digital elevation models and stream locations. L-THIA provides estimates of specific pollutants (such as Phosphorus and Nitrogen) whereas HIT can only estimate soil erosion and sediment. You can read more about how L-THIA works here.

Click here to read about the uncertainty in L-THIA model outputs.
The Great Lakes Watershed Management System represents the integration of several water quality modeling projects across the region, led by The Nature Conservancy (TNC), The U.S. Army Corps of Engineers Chicago District (USACE), the Institute of Water Research at Michigan State University (IWR-MSU), and the Department of Agricultural and Biological Engineering at Purdue University (ABE-Purdue).

funded the development of erosion and sediment models within the Saginaw Bay Watershed, and the ability to re-run those models online for user-defined areas of BMPs or land cover change. also funded the development of watershed-scale prioritization functionality, whereby users could specify a target % of land to focus conservation practices within a particular watershed and then estimate resulting erosion and sediment load reductions.

funded the development of erosion and sediment models for the Fox, Genesee, Maumee, and Saginaw River basins. also funded the development of a web-service version of L-THIA model allowing for an integration of L-THIA estimates of non-point source pollution with estimates of erosion and sediment loading from HIT model.

developed the web-service version of L-THIA, the expanded list of land cover change and BMP practices available for dynamic simulation, and assembled the necessary backend data to make analysis available for the system's current focus watersheds.

developed erosion and sediment model for the system's current focus watersheds, the ability to re-run those model on-line under various BMP and land cover change conditions, and the watershed-scale analysis capabilities. also led the integration of its and analysis tools within this single mapping interface.

Privacy Statement

Version 2.7

Release Date 5/16/2016


Glenn O'Neil (oneilg@msu.edu): 609-557-3017
Jeremiah Asher (asherjer@msu.edu): 517-432-5586