Walnut Creek Watershed Database from the USDA National Soil Tilth Laboratory
Entry ID: USDA_WALNUT_CREEK

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Summary
Abstract: The Walnut Creek Watershed is a 12,700-acre watershed located south of
Ames, IA. The watershed has been monitored since 1990 for the
transport of herbicides (atrazine, alachlor, metribuzin, metolachlor)
and nitrates (nitrate-N). Loss of the materials has been measured in
tile drains from individual fields, subbasins within the watershed,
and from the entire watershed. An extensive network of ... View entire text
Geographic Coverage
Spatial coordinates   
  N: 42.0   S: 41.0   E: -93.0   W: -94.0

Temporal Coverage
Start Date: 1992-03-15
Science Keywords
AGRICULTURE > AGRICULTURAL CHEMICALS > FERTILIZERS Parameter Definition
AGRICULTURE > AGRICULTURAL CHEMICALS > PESTICIDES > HERBICIDES Parameter Definition
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Quality Data in the databases will carry a summary of the quality
assurance/quality control (QA/QC). Data released without QA/QC are
considered preliminary and should not be used in publications.
Access Constraints Contact J.L. Hatfield for data availability.
Use Constraints Data should not be used in publications without review and
authorization of the PI at USDA/NSTL and project managers at USGS and
EPA.
Data Set Progress
IN WORK
Originating Center
Data Center
National Soil Tilth Laboratory, Agricultural Research Service, U. S. Department of Agriculture Supplemental Info
Data Center URL: http://www.nstl.gov/

Data Center Personnel
Name: J. C. HATFIELD
Phone: 515-294-5723
Fax: 515-294-8125
Email: hatfield at nstl.gov
Contact Address:
USDA Agricultural Research Service
National Soil Tilth Laboratory
2150 Pammel Drive
City: Ames
Province or State: IA
Postal Code: 50011-4420
Country: USA
Distribution
Distribution Media: 3.5-inch diskette
Distribution Format: ASCII files
Personnel
Role: INVESTIGATOR
Role: TECHNICAL CONTACT
Phone: 515-294-5723
Fax: 515-294-8125
Email: hatfield at nstl.gov
Contact Address:
USDA Agricultural Research Service
National Soil Tilth Laboratory
2150 Pammel Drive
City: Ames
Province or State: IA
Postal Code: 50011-4420
Country: USA
Publications/References
Sauer, P.J. and J.L. Hatfield. 1994. "Walnut Creek Watershed: Research
Protocol Report". National Soil Tilth Laboratory Bulletin, 94-1,
USDA-ARS, Ames, IA, 418 pp.
Extended Metadata Properties
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Creation and Review Dates
Last DIF Revision Date: 1999-05-10
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