[Date Prev][Date Next][Date Index]

GLIN==> NOAA Great Lakes Seminar Series - February 19, 2004


Thursday, February 19, 2004

10:30 a.m.

"GLERL's Distributed Hydrology Model for the Maumee River Watershed"

Dr. Thomas E. Croley II
Research Hydrologist

GLERL Main Conference Room
2205 Commonwealth Blvd.
Ann Arbor, MI 48105
For directions:


GLERL adapted their Large Basin Runoff Model from its lumped-parameter definition for an entire watershed to a two dimensional representation of the flow cells comprising the watershed.  GLERL modified the LBRM to allow cell inflow from upstream by considering only flows be-tween adjacent cell surfaces but not their subsurface zones.  They also organized watershed cell calculations and implemented spatial flow routing.  They now take model parameters for each cell proportional to spatial variations observed in the field (in permeability, surface slope, land use and cover, and flow roughness) and calibrate to find the spatial mean parameter values.  GLERL and Western Michigan University developed spatial databases for the Kalamazoo River watershed and the Maumee River watershed, for use with the distributed model.  After experi-menting with modeling alternatives and behavior, they applied the model to both watersheds to produce animations of spatial outputs, mapped over the watershed.  These include daily air tem-perature, precipitation, snow pack, upper soil zone moisture, lower soil zone moisture, ground-water moisture, evapotranspiration, surface moisture storage, and runoff for every cell compris-ing the watershed.  GLERL considered several methods to spatially estimate meteorology and depicted their spatial appearance.  The animations help to clarify the hydrological processes un-derway in the continuous simulation of the watershed.  Extensions of the distributed-parameter model include the addition of lateral cell flows between adjacent subsurface zones (soil zones and groundwater zone), spatial variation schemes for additional model parameters, land cover/land use experiments, application to other watersheds, and the addition of conservative tracer concentrations.

For more information, contact:
Dr. David Reid

David F. Reid, Ph.D.
Senior Research Scientist
NOAA Seminar Series Co-Chair
Task Leader, GLERL Nonindigenous Species Program
Member, NOAA Invasive Species Matrix Program Management Team
Director, NOAA National Center for Research on Aquatic Invasive Species
U.S. Department of Commerce
National Oceanic and Atmospheric Administration
Great Lakes Environmental Research Laboratory
2205 Commonwealth Blvd.
Ann Arbor, MI  48105-2945
Voice:	734-741-2019
FAX:	743-741-2055
GLERL home page: