Loseke-Taylor watershed : floodplain management study : Colfax and Platte Counties, Nebraska

210 Pages·1993·7.3 MB·English

by  United States. Soil Conservation Service

Historic, Archive Document
Do not assume content reflects current
scientific knowledge, policies, or practices.

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1993
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lE3iS^‘E‘D
MANAGEMENT STUDY
FLOODPLAIN
Colfax and Platte Counties, Nebraska
prepared by:
i United States
Department of
Agriculture
Soil for:
Conservation Lower Platte North
Service Natural Resources District
Lincoln, Nebraska Wahoo, Nebraska
Nebraska Natural
Resources Commission
Lincoln, Nebraska OCTOBER 1993
United States
Department of
Agriculture
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w U-S. DEPT, ofagriculture
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LOSEKE-TAYLOR
FLOODPLAIN MANAGEMENT STUDY
TABLE OF CONTENTS
Pace
Introduction 1
.
Study Area 5
.
Streams 5
.
Soils and Topography 7
.
Climate 10
.
Geology 12
.
Economy 13
.
Social and Economic Information 13
.
Population 15
.
...
Historical and Archaeological .15
.
Natural Values 16
.
Resources Census 17
.
Prime Farmland 21
.
Forestry 22
.
Wildlife 22
.
Threatened and Endangered Species 24
. . .
Water Quality 24
.
Groundwater 26
.
Problems and Opportunities 27
.
Flooding 27
.
Erosion and Sediment 31
.
Existing Floodplain Management 32
.
Pace
Alternatives for Floodplain Management* 32
® ® •
........
Present Condition 33
.........
Land Treatment 34
Preservation and/or Restoration of Natural Values 34
Nonstructural Measures 37
. . . . .
Zoning 37
. .
......
Building Codes. 37
......
Flood Insurance 38
Development Policies. 39
. . .
Emergency Preparedness. 39
. .
o..®.....
Relocation 39
o <* ®
Flood Warning System. 39
. . . 0 9 0 0 9
Flood Proofing 40
. 0 9 9 9
....
Structural Measures 40
9 ® • C • 9
Combination of Alternatives 41
9 9 9
.......
Flood Hazard Maps 42
......
Glossary 44
0 9 9 0 9 9 9
Bibliography and References 53
. . 9 9 9 0
APPENDICES
Appendix A - Flood Hazard Maps
Appendix B - Flood Profiles.
Appendix C - Technical Tables
Appendix D - Investigations and Analyses
Appendix E - Elevation Bench Marks
Appendix F - Floodway Maps
LIST OF FIGURES
No. Title Page
1 Evaluation Reach Map 29
2 Floodplain Management Program 35
3 Floodway Schematic D-3
F-3
LIST OF TABLES
No. Title Page
1 Detailed Study Area 7
2 Selected Census of Agriculture 14
3 Land Use Acres in Study Area by
Land Capability Class 18
4 Land Use Acres and Soil Loss
.......
by Land Capability Class 19
5 Land Treatment and Soil Loss
by Land Use 20
6 Crop and Pasture Flood Damages 28
7 Present Average Annual Flood Damages 30
. .
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:
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