Alternative Evaluation Report

Replacement of Upper Batavia Dam

Kane County, Illinois

Download this report as a PDF here. The file is 19 megs in size and includes the Table of Contents, Background, Design Objectives, Fish Passage Criteria, Recreation, Planning, Concept Development, Dam Removal, Project Alternatives and Alternate Evaluation sections. The Appendices can be downloaded here in PDF format, 10 megs in size.

TABLE OF CONTENTS

INTRODUCTION	
   Summary	
   Location
		Figure 1: Vicinity Map	
   Project History	
		Figure 2: Location of Dams Along Fox River
		Figure 3: 1946 Aerial Photograph
		Figure 4: 1998 Aerial Photograph

BACKGROUND
   Site Conditions	
   Previous Studies
		Figure 5: Bathtub Spillway
		Figure 6: Rock Dam
		Figure 7: 2-sided spillway or Modified Ogee 
		   Spillway Hydrology
		Figure 8: Location of Gaging Stations	
		Figure 9: Percent Exceedence Curve
		Table 1: Design Flows
		Table 2: Dam Surface Elevations
   Water Quality
   Dangers with Dams
		Figure 10: Cross Section of Ogee Crest Dam
		Figure 11: Upstream Flip
		Figure 12: Stepped Dam
   Sediment and Dams
		Figure 13: 1939 Aerial Photograph
		Figure 14: 1970 Aerial Photograph
		Figure 15: 1981 Aerial Photograpt
   Approach

DESIGN OBJECTIVES

FISH PASSAGE CRITERIA
   Fisheries Data
      Figure 16: Number of Species of Fish Found 
      in the Upstream and Downstream Reaches
      Figure 17: Index of Biotic Integrity
      Figure 18: Harvestable Sport Fish
      Figure 19: Number of Channel Catfish
      Figure 20: Number of Smallmouth Bass
      Figure 21: Habitat Assessment QHEI
      Table 3: Fish Swimming Speeds
      Table 4: Typical Spawning and Migration Patterns
   Fish Passage Criteria
      Figure 22: Slope and Cost vs. Fish Passage Velocity for a 
         Roughened Channel at Batavia, Illinois
      Table 5: Fish Passage Criteria
      Table 6: Target Species
   Conclusions

RECREATION
   River-Based Recreation
   Motorized Craft
   Canoe/Kayak
   Whitewater Canoe/Kayak
   Slalom
   Rodeo
   Open Deck Canoe	
   Recreation on Depot Pond
   Land-Based Recreation

PLANNING
   Impact of Planning Considerations

CONCEPT DEVELOPMENT
   Concept A - Natural Whitewater Rapid
      Figure 23: Natural Whitewater Rapid
      Figure 24: Artist's Conception of Farad Dam Replacement
   Concept B - Whitewater Bypass Channel
      Figure 25: Whitewater Bypass Channel
      Figure 26: Confluence Park in Denver, CO
   Concept C - Off -River Channel	
      Figure 27: Off-river Channel
      Figure 28: Off-River Channel in Nottingham, England
   Concept D - Dam Lowering/Removal
      Figure 29a: Edwards Dam on the Kennebec RiverPrior to Removal
      Figure 29b: Edwards Dam on the Kennebec River After Removal

   DAM REMOVAL
      Sediment
         Figure 30: Soil Boring Results Just Upstream of Dam
         Figure 31: Sediment Volume Calculation

PROJECT ALTERNATIVES
   Alternative 1 - Full-Width Whitewater Rapid
      Figure 32: Artist's Rendering of Alternative 1
      Figure 33: Comparison of Difficulty and Gradient for Various 
         River and Man-Made Whitewater Courses	
   Alternative 2 - River-Right Whitewater Bypass
   Alternative 3 - Whitewater Course Through the Cut
   Alternative 4 - Small Whitewater Rapid with Depot Pond
      Figure 34: Milwaukee River, Wisconsin,Woolen Mills Dam Removal
      Figure 35: Cross-section of a Channel Showing the Hydrologic or 
         Bankfull Floodplain and the Entire Floodplain
   Alternative 4a - Riffle/Pool River Restoration with Depot Pond
      Figure 36: Artist's Rendering of Alternative 4,a
      Figure 37: Channel Restoration/Enhancement
      Figure 38: Dam Removal
      Figure 39: Aerial Photo from the Early 1970s
      Figure 40: Looking Downstream from the Overbank Area
      Figure 41: Stabilized Overbank Area
      Figure 42: Riffle and Pool	
      Figure 43: Photograph of Impervious Jetty Made of "Faux" Rock 
         on the South Platte River, Denver, CO
      Figure 44: Toe Protection on the South Plafte River, Denver, CO
   Alternative 5 - Whitewater Rapid Through Town Center

ALTERNATIVE EVALUATION
   Design Objectives
      Table 7: Fish Passage Evaluation Summary Matrix
   Cost Evaluation	
      Table 8: Statement of Probable Costs
   Qualitative Evaluation
      Figure 45: Whitewater Recreational Quality
      Figure 46: Open Deck Canoeing Recreational Quality
      Figure 47: Aquatic Habitat Quality
         Table 9: Alternative Ranking
         Table 10: Sample Matrix	
   Alternative Selection and Modeling

SUMMARY	

DRAWINGS

REFERENCES

APPENDIX A - Hydraulic Model

APPENDIX B - Fish Species List

APPENDIX C - Boring Results