A statistical evaluation of the water quality impacts of Best Management Practices installed at Tillamook County dairies Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/6h440w38h

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • The overall goal of this study was to determine if the Tillamook Bay tributaries' water quality has improved as a result of the Best Management Practices (BMP) installed at Tillamook County Dairies. The Rural Clean Water Program (RCWP) was a 10 to 15 year experiment designed to control agricultural non-point source (NPS) in rural watersheds throughout the nation. The RCWP Tillamook Watershed Project in Tillamook County, Oregon promoted the installation of manure management facilities and nutrient management strategies to improve the water quality of Tillamook Bay. The goal of the project was to reduce the fecal coliform concentration by 70%. Since the Bay is used for oyster production, there has been extensive sampling of Tillamook Bay and its tributaries since 1960. Unfortunately, much of the tributary data were compiled for a variety of short-term projects and therefore, the area lacks a consistent strategy for data collection. This inconsistency coupled with the variability in the data has made it difficult to evaluate changes in the water quality. It is important to note that this analysis is not a prediction model. It is a statistical model using an analysis of variance (ANOVA). The term, model, will be used to describe the response of ANOVA. This model is the best representation of the trend given the limited useful data that was available. The 33 year "tributary" analysis of the Wilson River station (D412130) determined fecal coliform concentration reductions as high as 69.83, 62.67, 69.02 and 72.38% in the Spring, Summer, Autumn and Winter, respectively. There were 48.59, 36.41, 47.21 and 52.95% reductions during the RCWP years (1980-1992) that may be attributed to the BMP's. The BMP installation began in 1981 and continued through 1995, however, the majority of the BMP's installation began in 1983. These reductions are not at optimum levels because of three important factors. First of all, not all farms have been provided with fullest possible array of manure containment facilities. Secondly, even with full implementation, some fecal coliform bacteria may escape. Finally, the BMP's must be diligently operated and maintained to provide the most effective capture and die-off of fecal coliform bacteria. When the BMP's are correctly installed and well managed, they will provide the maximum manure containment protection for the streams.
Resource Type
Date Available
Date Copyright
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Academic Affiliation
Non-Academic Affiliation
Subject
Rights Statement
Peer Reviewed
Language
Digitization Specifications
  • File scanned at 300 ppi (Monochrome) using ScandAll PRO 1.8.1 on a Fi-6770A in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
Replaces
Additional Information
  • description.provenance : Submitted by Kaylee Patterson (kdpscanner@gmail.com) on 2012-11-02T16:04:08Z No. of bitstreams: 1 DorseyKramerJadene1996.pdf: 8385630 bytes, checksum: f6560301f6a26ab8b413fcef2bc528c9 (MD5)
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2012-11-02T18:13:14Z (GMT) No. of bitstreams: 1 DorseyKramerJadene1996.pdf: 8385630 bytes, checksum: f6560301f6a26ab8b413fcef2bc528c9 (MD5)
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2012-11-05T21:38:17Z (GMT) No. of bitstreams: 1 DorseyKramerJadene1996.pdf: 8385630 bytes, checksum: f6560301f6a26ab8b413fcef2bc528c9 (MD5)
  • description.provenance : Made available in DSpace on 2012-11-05T21:38:17Z (GMT). No. of bitstreams: 1 DorseyKramerJadene1996.pdf: 8385630 bytes, checksum: f6560301f6a26ab8b413fcef2bc528c9 (MD5) Previous issue date: 1995-12-18

Relationships

In Administrative Set:
Last modified: 08/09/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items