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Distribution of Dissolved Pesticides and Other Water Quality Constituents in Small Streams, and their Relation to Land Use, In the Willamette River Basin,Oregon

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Chauncey W. Anderson, Tamara M. Wood and Jennifer L. Morace
Publication_Date: 1997
Title: Distribution of Dissolved Pesticides and Other Water Quality Constituents in Small Streams, and their Relation to Land Use, In the Willamette River Basin,Oregon
Edition:
Geospatial_Data_Presentation_Form: database
Series_Information:
Series_Name:
Issue_Identification:
Publication_Information:
Publication_Place: Portland, Oregon
Publisher: U.S. Geological Survey
Other_Citation_Details:
Online_Linkage:
Description:
Abstract:
Water quality samples were collected at sites in 16 randomly selected agricultural and 4 urban subbasins as part of Phase III of the Willamette River Basin Water Quality Study in Oregon during 1996. Ninety-five samples were collected and analyzed for suspended sediment, conventional constituents (temperature, dissolved oxygen, pH, specific conductance, nutrients, biochemical oxygen demand, and bacteria) and a suite of 86 dissolved pesticides. The data were collected to characterize the distribution of dissolved pesticide concentrations in small streams (drainage areas 2.6? 13 square miles) throughout the basin, to document exceedances of water quality standards and guidelines, and to identify the relative importance of several upstream land use categories (urban, agricultural, percent agricultural land, percent of land in grass seed crops, crop diversity) and seasonality in affecting these distributions. A total of 36 pesticides (29 herbicides and 7 insecticides) were detected basinwide. The five most frequently detected compounds were the herbicides atrazine (99% of samples), desethylatrazine (93%), simazine (85%), metolachlor (85%), and diuron (73%). Fifteen compounds were detected in 12?35% of samples, and 16 compounds were detected in 1?9% of samples. Water quality standards or criteria were exceeded more frequently for conventional constituents than for pesticides. State of Oregon water quality standards were exceeded at all but one site for the indicator bacteria E. coli, 3 sites for nitrate, 10 sites for water temperature, 4 sites for dissolved oxygen, and 1 site for pH. Pesticide concentrations, which were usually less than 1 part per billion, exceeded State of Oregon or U.S. Environmental Protection Agency aquatic life toxicity criteria only for chlorpyrifos, in three samples from one site; such criteria have been established for only two other detected pesticides. However, a large number of unusually high concentrations (1?90 parts per billion) were detected, indicating that pesticides in the runoff sampled in these small streams were more highly concentrated than in the larger streams sampled in previous studies. These pulses could have had short term toxicological implications for the affected streams; however, additional toxicological assessment of the detected pesticides was limited because of a lack of available information on the response of aquatic life to the observed pesticide concentrations. Six pesticides, including atrazine, diuron, and metolachlor, had significantly higher (p<0.08 for metolachlor, p<0.05 for the other five) median concentrations at agricultural sites than at urban sites. Five other compounds ?carbaryl, diazinon, dichlobenil, prometon, and tebuthiuron?had significantly higher (p<0.05) concentrations at the urban sites than at the agricultural sites. Atrazine, metolachlor, and diuron also had significantly higher median concentrations at southern agricultural sites (dominated by grass seed crops) than northern agricultural sites. Other compounds that had higher median concentrations in the south included 2,4-D and metribuzin, which are both used on grass seed crops, and triclopyr, bromacil, and pronamide. A cluster analysis of the data grouped sites according to their pesticide detections in a manner that was almost identical to a grouping made solely on the basis of their upstream land use patterns (urban, agricultural, crop diversity, percentage of basin in agricultural production). In this way inferences about pesticide associations with different land uses could be drawn, illustrating the strength of these broad land use categories in determining the types of pesticides that can be expected to occur. Among the associations observed were pesticides that occurred at a group of agricultural sites, but which have primarily noncropland uses such as vegetation control along rights-of-way. Also, the amount of forested land in a basin was negatively associated with pesticide occurrence
Purpose:
Not Available
Supplemental_Information:
REFERENCE: Anderson, C. W., Wood, T.M., and Morace, J.M., 1997, Distribution of Dissolved Pesticides and Other Water Quality Constituents in Small Streams, and their Relation to Land Use, in the Willamette River Basin, Oregon, 1996. U.S. Geological Survey Water-Resources Investigations Report 97-4268, Portland, Oregon. U.S. Geological Survey http://oregon.usgs.gov/pubs_dir/Pdf/97-4268.pdf
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19960301
Ending_Date: 19961130
Currentness_Reference:Unknown
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: -124.0
East_Bounding_Coordinate: -121.5
North_Bounding_Coordinate: 46.0
South_Bounding_Coordinate: 43.5
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > AGRICULTURAL CHEMICALS > PESTICIDES
Theme_Keyword: EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > ECOSYSTEM FUNCTIONS > NUTRIENT CYCLING
Theme_Keyword: EARTH SCIENCE > BIOSPHERE > VEGETATION > NITROGEN
Theme_Keyword: EARTH SCIENCE > BIOSPHERE > VEGETATION > NUTRIENTS
Theme_Keyword: EARTH SCIENCE > BIOSPHERE > VEGETATION > PHOSPHORUS
Theme_Keyword: EARTH SCIENCE > HUMAN DIMENSIONS > ENVIRONMENTAL IMPACTS > CONTAMINANT LEVELS/SPILLS > PESTICIDES
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER > SURFACE WATER PROCESSES/MEASUREMENTS > RUNOFF > TOTAL RUNOFF
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > CONTAMINANTS > PESTICIDES
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > DISSOLVED GASES > DISSOLVED OXYGEN
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > NITROGEN COMPOUNDS
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > NUTRIENTS
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > PHOSPHOROUS COMPOUNDS
Theme_Keyword: EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > FRESHWATER ECOSYSTEMS > RIVERS/STREAM
Theme_Keyword: Water Quality
Theme_Keyword: Suspended Sediment
Theme_Keyword: Conventional Constituents
Theme_Keyword: Temperature
Theme_Keyword: Dissolved Oxygen
Theme_Keyword: Ph
Theme_Keyword: Specific Conductance
Theme_Keyword: Nutrients
Theme_Keyword: Biochemical Oxygen Demand
Theme_Keyword: Bacteria
Theme_Keyword: Willamette River Basin
Theme_Keyword: Oregon
Theme_Keyword: Biological Data Profile
Theme_Keyword: Bdp
Theme_Keyword: NULL
Theme_Keyword: NULL
Theme_Keyword: NULL
Theme_Keyword: NULL
Theme_Keyword: NULL
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > OREGON
Access_Constraints: None
Use_Constraints:
None
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: CHAUNCEY W. ANDERSON
Contact_Position: TECHNICAL CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: U.S. Geological Survey
Address: 10615 SE Cherry Blossom Dr.
City: Portland
State_or_Province: Oregon
Postal_Code: 97216
Country: USA
Contact_Voice_Telephone: (503) 251-3206
Contact_Facsimile_Telephone: (503) 251-3470
Contact_Electronic_Mail_Address: chauncey@usgs.gov
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
In order to estimate variability in sampling and laboratory techniques, quality control (QC) samples were submitted to the NWQL for pesticides, and to the ODEQ and ACWA laboratories for the conventional constituents. Most QC samples were used to evaluate the potential for problems form the combination of field and laboratory procedures. QC samples for both pesticides and conventional constituents included (1) field and equipment blanks to test for contamination, (2) replicate native-water grab samples to test for precision, (3) depth and width integrated samples collected as replicates to compare with grab samples, and (4) distinct compounds, representing relevant pesticide families (surrogates), added in known amounds to each pesticide sample to monitor the analytical method's ability to quantify those sample types. Additional QC samples for pesticides included (5) native-water samples spiked with pesticide mixtures to test for accuracy, done at a range of concentrations (low, medium, and high)), and (6) replicate spike samples to test for accuracy and precision. Water for blank samples was carefully selected to be free fo the constituents of concern: organic-free water was used for pesticide, immunoassay, and BOD5 samples; inorganic-free water was used for nutrient samples; a peptone buffer solution was used for fecal coliform bacteria, and a sterile saline solution was used for E. Coli bacteria blanks. QC data for this study are presented in Appendix 1 of Anderson and others, 1997. The study design called for sample collection from 16 randomly selected subbasins that each had predominantly agricultural land uses upstream of the sampling site, and 4 subbasins having predominantly urban land use. In order to minimize inputs of water from undefined or highly varied sources, small drainage basins ranging from approximately 3 to 15 square miles were selected. The four urban sites were selected from a set of urban subbasins drawn on topographic maps, and the final choice was based primarily on the desire to sample urban drainages that had not been extensively sampled previously, the desire to sample sites in urban areas in the northern, central and southern Willamette Basin, and the suitability of a site for sampling. Land use information for the urban sites was derived fromthe GIS, with coverages for urban lands most recently updated on the basis of the 1990 census (Hitt, 1994). Due to rapid growth in many of western Oregon's cities during the 1990's data for urban land use taken from the GIS is expected to somewhat underestimate the proportion of urban lands and over estimate the proportion of agricultural or forested lands in the Phase III urban subbasins. However these data were considered adequate for the purposes of the study and the report.
Logical_Consistency_Report:
Not Available
Completeness_Report:
Not Available
Lineage:
Process_Step:
Process_Description:
Not Available
Process_Date: Unknown
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Spatial_Reference_Information:
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: DOI/USGS/WRD/OR > Water Resource Division, Oregon, U.S. Geological Survey, U.S. Department of the Interior
Contact_Person: DENNIS D. LYNCH
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: U.S. Geological Survey
Address: 10615 S.E. Cherry Blossom Drive
City: Portland
State_or_Province: Oregon
Postal_Code: 97216-3159
Country: USA
Contact_Voice_Telephone: (503) 251-3200
Contact_Facsimile_Telephone: (503) 251-3470
Contact_Electronic_Mail_Address: ddlynch@usgs.gov
Resource_Description: WRIR_97_4268
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Not Available
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://oregon.usgs.gov
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Fees: Not Available
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Metadata_Reference_Information:
Metadata_Date: 20010627
Metadata_Review_Date: 20170301
Metadata_Future_Review_Date: 20020627
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: TYLER B. STEVENS
Contact_Position: DIF AUTHOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: NASA Goddard Space Flight Center
Address: Global Change Master Directory
City: Greenbelt
State_or_Province: MD
Postal_Code: 20771
Country: USA
Contact_Voice_Telephone: (301) 614-6898
Contact_Facsimile_Telephone: 301-614-5268
Contact_Electronic_Mail_Address: Tyler.B.Stevens@nasa.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
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