WATERSHED ASSESSMENT

A Watershed Assessment is a collection of all existing available public information relating to the health and well being of the natural resources within the geographic area of the watershed. The initial Seven Basins Watershed Assessment was completed in 2004 by Environmental Management Services, Inc., under contract with the Seven Basins Watershed Council, funded by a grant from the Oregon Watershed Enhancement Board (OWEB).

The purpose of the watershed assessment is threefold. First, it provides a
compilation of basic information regarding the environmental characteristics of the Seven Basins Watershed. Secondly, it identifies data gaps and makes
recommendations for the development of action plans that will address the
data gaps. These two goals are typically developed and presented in most
watershed assessments. However, the Seven Basins Watershed Council
envisioned an assessment that was more than just a compilation of facts; they wanted a document that could be used to educate themselves and other
stakeholders in the watershed. Thus, the third purpose of this assessment is that it provides an introduction to some of the basic physical, chemical, and biological processes that control factors, such as, slope stability; sediment production and transport; water quality; water quantity; stream flow; groundwater flow; and surface water/groundwater interaction.

The Seven Basins Watershed Assessment is available to the public on CD by request to the Council. It is also available in Adobe PDF format for download here. The PDF file of the full entire document is quite large, 36,127KB, and is not quickly accessed by dial-up modem. Visitors to this page using dial-up modems may prefer to download just smaller particular sections of interest, available separately from within the Table of Contents below.

The full entire Seven Basins Watershed Assessment.PDF (36,127KB)

Or, by smaller increments:
TABLE OF CONTENTS (616KB)

Title Page (162KB)
Preface (88KB)
Acknowledgments (88KB)
Contributors to the Seven Basins Watershed Assessment (155KB)

Chapter 1 Introduction (874KB)
— Figure 1-1 SBW Boundaries (12,264KB)
— Figure 1-2 SBW Precipitation Map (4,656KB)
— Figure 1-3 SBW Ecoregion Map (4,473KB)
— Figure 1-6 SBW Soil Classification Map (11,642KB)
— Figure 1-7 SBW Vegetation Map (4,669KB)
— Figure 1-9 SBW Land Use Map (4,665KB)
— Figure 1-10 SBW Land Ownership Map (4,734KB)

Chapter 2 A Brief History of the Seven Basins Watershed (1,904KB)

Chapter 3 Channel Habitat Type Classification (297KB)
— Figure 3-1 SBW Channel Habitat Type Class Map (5,428KB)

Chapter 4 Hydrology and Water Uses (3,294KB)
— Figure 4-15 SBW Water Rights – Points of Diversion (5,598KB)
— Figure 4-16 SBW Water Rights – Places of Use (5,799KB)
— Figure 4-22 SBW Instream Water Rights (5,352KB)

Chapter 5 Riparian/Wetlands Assessment (1,035KB)
— Figure 5-6 SBW Wetlands Map (7,693KB)

Chapter 6 Impact of Wildfire (2,274KB)

Chapter 7 Sediment Sources (2,686KB)
— Figure 7-5 SBW Mapped Sediment Sources & Mine Locations (5,360KB)
— Figure 7-11 SBW Debris Flow Potential Map (6,028KB)

Chapter 8 Channel Modification Assessment (2,397KB)
— Figure 8-3 SBW Channel Habitat Type and Barriers Map (5,564KB)

Chapter 9 Water Quality (526KB)
— Figure 9-5 SBW DEQ 303(d) Streams (5,352KB)
— Figure 9-6 SBW Location of Water Quality Monitoring (5,366KB)

Chapter 10 Fish Assessment (1,604KB)
— Figure 10-4 SBW Fish Distribution Map (5,475KB)

Chapter 11 Summary of Watershed Conditions (176KB)

Appendix A: History of SBW (1,657KB)
Appendix B: Vegetation of the SBW (3,587KB)
Appendix C: Channel Habitat Type (308KB)
Appendix D: Water Rights-Total Certificates (450KB)
Appendix E: Water Rights-Total Permits (247KB)
Appendix F: Water Rights-Applications (274KB)
Appendix G: Wells in the SBW (184KB)
Appendix H: Riparian Condition Units (166KB)
Appendix I: Fish Barriers (240KB)
Appendix J: Fish Distribution (307KB)
Watershed Acronyms (137KB)
Watershed Glossary (179KB)

| PRIVACY |

©2003-2004 Seven Basins Watershed Council, Inc.
P.O. Box 909, Gold Hill, OR 97525
Ph (541) 261-7796 ; Fax (541) 830-0261
contact@sevenbasins.org
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