The map layers are organized into the groups below. Click on the group name to view the layers within it, and to display those layers on the map.

General Layers

My Projects ×

Privacy Statement
Answer the questions below to describe your field(s) and operation.

# Acres
Select a simulation saved to your account and build a detailed report. Once complete, a website link to the report will be displayed on the screen and sent via email to the address associated with your account.
The PDF report will include detailed outputs, survey responses, and a map.

Filter your simulations by project:
Your saved simulations:

To import survey answers from a previous saved simulation, select the simulation below and click Import Survey.

Filter your simulations by project:
Your saved simulations:

Below are the current simulations in your account that have not been classified as .
You can change each simulation's status by clicking on its orange pencil icon to edit its details.
Project Simulation Name View/Edit

Login to your account to view your saved projects.
Fill out the form below to create a new account.

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

first name: organization:
last name: email:
username: If you need to grant a partner organization access to your account, you can do that here:
re-type password:
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.

Provide the email address associated with the account and click the Reset button



Scenario Name:
This scenario will be saved to the project

Does this scenario refer to a currently installed BMP or management change? No (hypothetical)

Are you sure you want to delete the project named

All associated fields, simulations, and results will also be deleted.

Are you sure you want to delete the simulation named

All previously saved simulation results will also be deleted.

Make your edits and click the Save button below.
Project Name:

Simulation Name:
Part of project:
Simulated modules:
Does this simulation refer to a currently installed BMP or land cover change?

Simulation Name:
Part of project:
Does this simulation refer to a currently installed BMP or land cover change? No (hypothetical)

Through this menu you can delete multiple projects and simulations at once.

Filter by project:

Are you sure you want to delete the selected ?

All associated will also be deleted.

The tool allows users to digitize field boundaries in the watershed, describe the agricultural operations on the field(s), view modeled estimates of groundwater recharge, soil erosion, and sediment delivery, and then evaluate a priority score for the Maple River Watershed's regional conservation partnership program.

Modeled estimates of recharge were produced through the Soil and Water Assessment Tool (SWAT) and estimates of soil erosion and sediment delivery were modeled using the Revised Universal Soil Loss Equation (RUSLE) and the Spatially Explicit Delivery Model (SEDMOD).
This online tool was developed by IWR-MSU, and is part of the Great Lakes Watershed Management System toolkit.

Privacy Statement

Please direct technical questions regarding the online tool to Glenn O’Neil (IWR-MSU: oneilg@msu.edu), and questions regarding the Improving Stream Habitat in the Maple River Watershed project to Jeremiah Asher (IWR-MSU: asjerjer@msu.edu).
Click on the links below to begin guided tutorials of GLWMS functions.

How do I view aerial imagery for my field? How can I tell when and who took the picture?
How can I edit my field boundaries?
1. In the example below, the drawn feature did not adequately cover the field's northeast corner.
2. On the Draw table, click on the orange pencil to edit the feature.
3. Use the feature anchors to move, resize, or reshape its boundaries.
4. Note the updated boundary and acreage.

1. Click on a project name to view its saved simulations.

2. Click on a simulation name to load its field boundaries and model results.
Your current simulation is not saved.
It will be lost if you logout without saving it.

  • Through this menu, you can re-run multiple simulations at once.

    You start by selecting one or more previously saved simulations to re-run. Next, you can optionally specify parameters to be applied to all of the fields within the selected simulations. Lastly, you specify where the results should be saved within your account.

    The simulations can take a while to complete. You will receive an email from the system with the results once they are ready.
  • Filter by project:
    Your saved simulations:
    Simulations to include in the batch runs:
  • Next, you must describe a scenario you wish to apply to all of the simulations. You will do this by filling out the field survey for a single field. The answers on that survey will be applied to each of the simulations you selected in the previous window.

    Click Continue below to proceed. Note that proceeding will clear the map of any fields currently drawn on it, and unload any currently active modules.
  • Click on the button to describe the scenario to apply to all of the selected simulations.

    Next, you will complete a survey to describe your field(s) and agricultural operation, and select management changes to evaluate potential impacts on soil erosion and groundwater recharge.

    Survey status:

  • You have several options for how you would like to store the results of the batch simulations. You can opt to store the simulations into a new project, in an existing project (which will overwrite any simulations in that project with matching names), or you can choose to not store them. Regardless of your choice, you will still be emailed a report of the batch simulation results.

    In a new project named:
    In an existing project:
    Store each simulation within its current project.
    Do not save the simulations to my account.

  • The simulations may take a while to complete. An email will be sent to when the report is ready.

Note: proceeding with the batch simulation will clear the map of any fields currently drawn on it, and unload any active modules.

Do you wish to continue?
Built with funding from NRCS' Regional Conservation Partnership Program. Institute of Water Research at Michigan State University, all rights reserved 2022