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Status of Aquatic Bioassessment in U.S. EPA Region IX
Authors:Robert K Hall  Gary A Wolinsky  Peter Husby  James Harrington  Patti Spindler  Karen Vargas  Gordon Smith
Institution:(1) U.S. EPA Region IX, 75 Hawthorne Street, San Francisco, CA 94105, USA;(2) U.S. EPA Region IX Laboratory, 1337 S. 46th Street, Bldg. 201, Richmond, CA 94804, USA;(3) California Department of Fish &Game, Water Pollution Control Laboratory, 2005 Nimbus Rd., Rancho Cordova, CA 95670, USA;(4) Arizona Department of Environmental Quality, 3033 North Central Ave., M0301D, Phoenix, AZ 85012-2809, USA;(5) Nevada Division of Environmental Protection, 333 W. Nye Lane, Carson City, NV 89706, USA;(6) Hawaii Department of Health, 919 Ala Moana Blvd., Honolulu, HI 96814, USA
Abstract:U.S. EPA Region IX is supporting bioassessment programs in Arizona, California, Hawaii and Nevada using biocriteria program and Regional Environmental Monitoring and Assessment Program (R-EMAP) resources. These programs are designed to improve the state, tribal and regional ability to determine the status of water quality. Biocriteria program funds were used to coordinate with Arizona, California and Hawaii which resulted in these states establishing reference conditions and in developing biological indices. U.S. EPA Region IX has initiated R-EMAP projects in California and Nevada. These U.S. EPA Region IX sponsored programs have provided an opportunity to interact with the States and provide them with technical and management support. In Arizona, several projects are being conducted to develop the State's bioassessment program. These include the development of a rotational random monitoring program; a regional reference approach for macroinvertebrate bioassessments; ecoregion approach to testing and adoption of an alternate regional classification system; and development of warm-water and cold-water indices of biological integrity. The indices are projected to be used in the Arizona Department of Environmental Quality (ADEQ) 2000 water quality assessment report. In California, an Index of Biological Integrity (IBI) has been developed for the Russian River Watershed using resources from U.S. EPA's Non-point Source (NPS) Program grants. A regional IBI is under development for certain water bodies in the San Diego Regional Water Quality Control Board. Resources from the U.S. EPA Biocriteria program are being used to support the California Aquatic Bioassessment Workgroup (CABW) in conjunction with the California Department of Fish & Game (CDFG), and to support the Hawaii Department of Health (DoH) Bioassessment Program to refine biological metrics. In Nevada, R-EMAP resources are being used to create a baseline of aquatic information for the Humboldt River watershed. U.S. EPA Region IX is presently working with the Nevada Division of Environmental Protection (NDEP) to establish a Nevada Aquatic Bioassessment Workgroup. Future R-EMAP studies will occur in the Calleguas Creek watershed in Southern California, and in the Muddy and Virgin River watersheds in southern Nevada, and the Walker River watershed in eastern California and west-central Nevada.
Keywords:bioassessment  biological assessments  biocriteria  indices  Index of Biological Integrity (IBI)  macroinvertebrate community  U  S  EPA Region IX  Arizona  ADEQ  California  CDFG  Hawaii  DoH  Nevada  NDEP  water quality  R-EMAP
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