Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

 Due to a lapse in federal funding, this USDA website will not be actively updated. Once funding has been reestablished, online operations will continue.


  1. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub

    Description

    Watershed-scale hydrology and water quality models were used to evaluate the crrmulative impacts of land use and management practices on dowrzstream hydrology and nitrogen loading of poorly drained watersheds. Field-scale hydrology and nutrient dyyrutmics are predicted by DRAINMOD in both models. In the first model (DRAINMOD-DUFLOW), field-scale predictions are coupled to the canavstream routing and in-stream water quality model DUFLOW; which handles Jow routing and nutrient transport and transfornation in the drainage canaustream network. In the second model (DRAINMOD-W), DRAINMOD was integrated with a new one-dimensional canal and water quality model. The hydrology and hydraulic routing components ofthe models were tested using data from a 2950 ha drained managedforest watershed in the coastal plain of eastern North Carolina. Both models simulated the hydrology and nitrate-nitrogen (NO3-N) loading ofthe watershed acceptably. Simulated outflows and N03-N loads at the outlet ofthe watershed were in good agreement with the temporal trend for five years of observed data. Over a five-year period, total outfow was within 1% of the measured value. Similarly, NO3-N load predictions were within 1% of the measured load. Predictions of the two models were not statistically difierent at the 5% level of significance.

    Publication Notes

    • You may send email to pubrequest@fs.fed.us to request a hard copy of this publication.
    • (Please specify exactly which publication you are requesting and your mailing address.)
    • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Fernandez, Glenn P.; Chescheir, George M.; Skaggs, R. Wayne; Amatya, Devendra M. 2005. Development and testing of watershed-scale models for poorly drained soils. Transactions of the ASAE. 48(2): 639-652.

    Keywords

    DRAINMOD, DUFLOW, subsurface drainage, water quality, watershed-scale model

    Related Search


    XML: View XML
Show More
Show Fewer
Jump to Top of Page
https://www.fs.usda.gov/treesearch/pubs/21350