Great Lakes Resource Shed Maps: Watershed Moisture

Resource sheds delineate the areal distribution of materials, originating over a time interval, prior to their passage through a location of interest at the end of the time interval. For a watershed, a significant location of interest is the watershed's outlet.

The images presented below depict previous days' areal distributions of source watershed moisture comprising watershed outflow on selected outflow dates. The RELATIVE data type expresses source material as a percentage of the outflow on the selected day and the ABSOLUTE data type expresses it in cubic meters per day. The resolution of the maps is 1 km². These images allow a visual comparison of areal and temporal moisture contributions for an outflow date and offer broad utility in interpreting watershed events.

There is software available for the user to build their own maps from the downloadable data sets. The zipped file contains complete documentation and test data files.
[download software]

To examine a resource shed of interest, select a watershed, year/month, outflow date, data type, and scale, and then press the "Select Image Series" button. Units in the 'relative' data sets are unitless fractions. Absolute data set units are cm/day.

Select Lake/Watershed	Year/Month	Outflow Date	Data Type	Scale

Downloading Data
Data for each image is available as a text file beneath each image (files are zipped).
+ text file description

Downloading Images
Right-click on the image, select "Save Image As."

Data Disclaimer
+ read Resource Shed Maps Disclaimer

1 days prior Outflow Date: 20080911 + data file	2 days prior Outflow Date: 20080911 + data file	3 days prior Outflow Date: 20080911 + data file	4 days prior Outflow Date: 20080911 + data file
5 days prior Outflow Date: 20080911 + data file	6 days prior Outflow Date: 20080911 + data file	7 days prior Outflow Date: 20080911 + data file	8 days prior Outflow Date: 20080911 + data file
9 days prior Outflow Date: 20080911 + data file	10 days prior Outflow Date: 20080911 + data file	11 days prior Outflow Date: 20080911 + data file	12 days prior Outflow Date: 20080911 + data file
13 days prior Outflow Date: 20080911 + data file	14 days prior Outflow Date: 20080911 + data file	15 days prior Outflow Date: 20080911 + data file