Agua Fria River Sub-Watershed
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NEMO Watershed Based Plan Agua Fria Watershed Acknowledgements Arizona NEMO acknowledges the University of Arizona Cooperative Extension Service, Arizona Department of Environmental Quality (ADEQ) Water Quality Division, the Water Resources Research Center, and the University of Arizona Advanced Resource Technology Lab (ART) for their technical support in producing the Watershed Based Plans. Funding provided by the U.S. Environmental Protection Agency under the Clean Water Act and the Arizona Department of Environmental Quality’s Water Quality Protection Division. Additional financial support is provided by the University of Arizona, Technology and Research Initiative Fund (TRIF), Water Sustainability Program through the Water Resources Research Center. The NEMO website is www.ArizonaNEMO.org. Written and prepared by: Lainie R. Levick, Mickey Reed, Elisabeth vanderLeeuw, D. Phillip Guertin and Kristine Uhlman University of Arizona Tucson, Arizona October 2006 Table of Contents Section 1: Introduction Background: Nonpoint Source Pollution and NEMO Watershed Based Plans Purpose and Scope Methods GIS and Hydrologic Modeling Fuzzy Logic Structure of this Plan References Section 2: Physical Features Watershed Size Topography Water Resources Lakes and Reservoirs Stream Types Stream Density Annual Stream Flow Water Quality Geology Alluvial Aquifers Soils Climate Precipitation Temperature References Data Sources Section 3: Biological Resources Ecoregions Vegetation Habitats (Riparian and Wetland Areas) Major Land Resource Areas (MLRAs) References Data Sources Section 4: Social / Economic Characteristics County Governments Council of Governments (COGs) Urban Areas Population Census Population Densities in 1990 Census Population Densities in 2000 Population Change i Roads Mines Land Use Land Ownership Special Areas Preserves Wilderness Golf Courses References Data Sources Section 5: Important Natural Resources Upper Agua Fria River NRA Agua Fria River – Lake Pleasant NRA Lower Agua Fria River NRA References Section 6: Watershed Classification Methods GIS and Hydrologic Modeling Fuzzy Logic Subwatershed Classification Water Quality Assessment Data Metals Water Quality Assessment Data - Metals Location of Mining Activities Potential Contribution of Mines to Sediment Yield SEDMOD/RUSLE Modeling Metals Results Sediment Water Quality Assessment Data – Sediment Land ownership - Sediment Human Use Index – Sediment AGWA/SWAT Modeling Runoff Erosion and Sediment Yield Sediment Results Organics Water Quality Assessment Data – Organics Human Use Index - Organics Land Use – Organics Nutrients pH Organics Results Selenium Water Quality Assessment Data – Selenium ii Agricultural Lands Number of Mines per Watershed Selenium Results References Data Sources Section 7: Watershed Management Management Methods Site Management on New Development Monitoring and Enforcement Activities Water Quality Improvement and Restoration Projects Education Strategy for Addressing Existing Impairment Metals Inventory of Existing Abandoned Mines Revegetation Erosion Control Runoff and Sediment Capture Removal Education Turkey Creek TMDL Implementation Plan Sediment Grazing Management Filter Strips Fencing Watering Facilities Rock Riprap Erosion Control Fabric Toe Rock Water Bars Erosion Control on Dirt Roads Channel and Riparian Restoration Education Organics Filter Strips Fencing Watering Facilities Septic System Repair Education Selenium Education Strategy for Channel and Riparian Protection and Restoration Education Programs Education Needs Target Audiences References iii Data Sources Section 8: Local Watershed Planning Potential Water Quality Improvement Projects Ash Creek and Sycamore Creek Subwatershed for metals pollution Big Bug Creek – Agua Fria River Subwatershed for sediment pollution Big Bug Creek – Agua Fria River Subwatershed for pollutants due to organics and nutrients derived from land use Agua Fria River – Lake Pleasant Subwatershed for selenium due to agricultural practices Technical and Financial Assistance Education and Outreach Implementation Schedules and Milestones Evaluation Monitoring Conclusions References Section 9: Summary of EPA’s 9 Key Elements for Section 319 Funding Introduction Element 1: Causes and Sources. Element 2: Expected Load Reductions. Element 3: Management Measures. Element 4: Technical and Financial Assistance. Element 5: Information / Education Component. Element 6: Schedule. Element 7: Measurable Milestones. Element 8: Evaluation of Progress. Element 9: Effectiveness Monitoring. Conclusions Appendices Appendix A. Water Quality Data and Assessment Status Appendix B. Suggested Readings Appendix C: Revised Universal Soil Loss Equation (RUSLE) Modeling Appendix D: Automated Geospatial Watershed Assessment Tool - AGWA iv List of Figures 1-1: Agua Fria Watershed Location Map. 1-2: Transformation of Input Data via a GIS, Fuzzy Logic Approach, and Synthesis of Results into a Watershed Classification. 2-1: Agua Fria Watershed Location. 2-2: Agua Fria Watershed Subwatershed Names and HUCs. 2-3: Agua Fria Watershed Topography. 2-4: Agua Fria Watershed Slope Classes. 2-5: Agua Fria Watershed Major Lakes and Streams. 2-6: Agua Fria Watershed Stream Types. 2-7: Agua Fria Watershed Stream Density. 2-8: Agua Fria Watershed USGS Stream Gages. 2-9: Agua Fria River at Avondale USGS Gage 09513970, Mean Daily Stream Flow (cfs) Hydrograph. 2-10: Agua Fria River at Avondale USGS Gage 09513970, Five Year Moving Average Annual Streamflow (cfs) Hydrograph. 2-11: New River near Rock Springs USGS Gage 09513780, Mean Daily Stream Flow (cfs) Hydrograph. 2-12: New River near Rock Springs USGS Gage 09513780, Five Year Moving Average Annual Stream Flow (cfs) Hydrograph. 2-13: Agua Fria River near Mayer USGS Gage 09512500, Mean Daily Stream Flow (cfs) Hydrograph. 2-14: Agua Fria River near Mayer USGS Gage 09512500, Five Year Moving Average Annual Streamflow (cfs) Hydrograph. 2-15: Agua Fria Watershed 303d Streams and Lakes. 2-16: Agua Fria Watershed Geology. 2-17: Agua Fria Watershed Alluvial Geology. 2-18: Agua Fria Watershed Soil Texture. 2-19: Agua Fria Watershed Soil Erodibility Factor. 2-20: Agua Fria Watershed Average Annual Precipitation (inches/year). 2-21: Agua Fria Watershed Weather Stations. 2-22: Agua Fria Watershed Average Annual Temperature (oF). 3-1: Agua Fria Watershed Ecoregions – Divisions. 3-2: Agua Fria Watershed Ecoregions – Provinces. 3-3: Agua Fria Watershed Ecoregions – Sections. 3-4: Agua Fria Watershed Brown, Lowe and Pace Biotic Communities. 3-5: Agua Fria Watershed Southwest Regional GAP Analysis Project Land Cover. 3-6: Agua Fria Watershed Riparian and Wetland Areas. 3-7: Agua Fria Watershed Major Land Resources Areas (percent by Subwatershed). 4-1: Agua Fria Watershed Counties. 4-2: Agua Fria Watershed Council of Governments. 4-3: Agua Fria Watershed Urbanized Areas (Census Bureau Classification). v 4-4: Agua Fria Watershed Urban Areas based on 2000 Population Density Greater than 1,000 persons/square mile. 4-5: Agua Fria Watershed 1990 Population Density, persons/square mile. 4-6: Agua Fria Watershed 2000 Population Density, persons/square mile. 4-7: Agua Fria Watershed Population Density Change 1990-2000 (persons/square mile). 4-8: Agua Fria Watershed Road Types. 4-9: Agua Fria Watershed Mine Types. 4-10: Agua Fria Watershed Mines - Status. 4-11: Agua Fria Watershed Mines - Primary Ore. 4-12: Agua Fria Watershed Land Cover. 4-13: Agua Fria Watershed Land Ownership. 4-14: Agua Fria Watershed Arizona Preserve Initiative Areas. 4-15: Agua Fria Watershed Wilderness Areas. 4-16: Agua Fria Watershed Golf Courses. 6-1: Transformation of Input Data via a GIS, Fuzzy Logic Approach, and Synthesis of Results into a Watershed Classification. 6-2: RUSLE Soil Loss “A” (Kg/ha/yr) by Subwatershed. 6-3: Results for the Fuzzy Logic Classification for Metals, Based on the Weighted Combination Approach. 6-4: Results for the Fuzzy Logic Classification for Sediment Based on the Weighted Combination Approach. 6-5: Results for the Fuzzy Logic Classification for Organics, Based on the Weighted Combination Approach. 6-6: Results for the Fuzzy Logic Classification for Selenium Based on the Weighted Combination Approach. 7-1: Agua Fria Land Ownership by Subwatershed. List of Tables 2-1: Agua Fria Watershed HUCs and Subwatershed Areas. 2-2: Agua Fria Watershed Elevation Range. 2-3: Agua Fria Watershed Slope Classes. 2-4: Agua Fria Watershed Major Lakes and Reservoirs. 2-5: Agua Fria Watershed Major Streams and Lengths. 2-6: Agua Fria Watershed Stream Types and Length. 2-7: Agua Fria Watershed Stream Density. 2-8: Agua Fria Watershed USGS Stream Gages and Annual Mean Stream Flow. 2-9: Agua Fria Watershed Geology. 2-10: Agua Fria Watershed Rock Types, percent by Subwatershed. 2-11: Agua Fria Watershed Soil Texture - Percent by Subwatershed. 2-12: Agua Fria Watershed Soil Erodibility Factor (K). 2-13: Agua Fria Watershed Average Annual Precipitation (in/yr). vi 2-14: Summary of Temperature Data for 13 Temperature Stations with Sufficient Data. 2-15: Agua Fria Watershed Average Annual Temperature (oF). 3-1: Agua Fria Watershed Ecoregions – Divisions. 3-2: Agua Fria Watershed Ecoregions – Provinces. 3-3: Agua Fria Watershed Ecoregions – Sections. 3-4: Agua Fria Watershed Brown, Lowe and Pace Biotic Communities, Percent by Subwatershed. 3-5: Agua Fria Watershed Southwest Regional GAP Analysis Project Land Cover, Percent by Subwatershed. 3-6: Agua Fria Watershed Riparian and Wetland Areas (acres) by Subwatershed. 3-7: Agua Fria Watershed Major Land Resource