Water, Air, and Soil Pollution

, Volume 105, Issue 1, pp 377–386

The Relationship Between Stream Chemistry and Watershed Land Cover Data in the Mid-Atlantic Region, U.S.

  • Alan T. Herlihy
  • John L. Stoddard
  • Colleen Burch Johnson
Article

DOI: 10.1023/A:1005028803682

Cite this article as:
Herlihy, A.T., Stoddard, J.L. & Johnson, C.B. Water, Air, & Soil Pollution (1998) 105: 377. doi:10.1023/A:1005028803682

Abstract

In order to investigate the relationship between stream chemistry and watershed land cover at the regional scale, we analyzed data from 368 wadeable streams sampled in the mid-Atlantic region of the U.S. during spring 1993-1994. Study sites were selected using a probability sample and the digitized version of the 1:100,000 scale USGS map stream network as the sample population. Both classified Thematic Mapper (TM) and USGS Land Use/Land Cover (LULC) data were used to quantify land cover in the study watersheds. On average, the most common land cover was forest (77%) followed by agriculture (20%), and urban (1%). Multiple regression analysis showed that concentrations of Cl-, nutrients, acid neutralization capacity, and base cations were the analytes most strongly related to watershed land cover. Despite large differences in resolution and age of the TM and LULC data sources, similar results were obtained with the two sources. Using a greater number of land cover subclasses did not greatly improve the land cover-chemistry relationships. Ecoregions with predominantly forested land cover had weaker relationships than ecoregions with more agricultural and/or urban land cover. In studies or databases without land cover information, Cl- concentration is a good surrogate indicator for general human disturbance in the watershed.

land cover land use mid-Atlantic region stream water chemistry watershed 

Copyright information

© Kluwer Academic Publishers 1998

Authors and Affiliations

  • Alan T. Herlihy
    • 1
  • John L. Stoddard
    • 2
  • Colleen Burch Johnson
    • 3
  1. 1.Department of Fisheries and WildlifeOregon State UniversityCorvallisUSA
  2. 2.U.S. EPA Environmental Research LaboratoryCorvallisUSA
  3. 3.OAO CorporationCorvallis

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