List of Figures

 

No.

Title

Page No.

1-1

Vicinity Map

after 1-2

1-2

CFHMP Study Area

after 1-2

1-3

CFHMP Planning Process

1-6

2-1

Yakima Basin Boundary

after 2-2

2-2

Yakima Irrigation Project

after 2-2

2-3

Yakima River Basin Schematic

2-3

2-4

Mean Monthly Precipitation in Yakima

2-7

2-5

Summary of Daily Average Flow

2-9

2-6

Geologic Hazard Areas in CFHMP Study Area

after 2-10

2-7

Wetlands within the CFHMP Study Area

after 2-12

2-8

Wildlife Habitat Areas in CFHMP Study Area

after 2-12

2-9

Land Use Distribution within 100-year Floodplain

after 2-16

2-10

Assessed Values of Parcels within 100-year Floodplain

after 2-16

2-11

Public and Yakama Nation Ownership within the 100-year Floodplain

after 2-18

2-12a

Yakima County Zoning (within a 1.5 Mile Buffer)

after 2-18

2-12b

City of Selah Zoning and Yakima County Zoning (within a 1.5 Mile Buffer)

after 2-18

3-1

Evaluated Flood Control Storage Facilities

3-12

3-2

Lower Naches River Partnership

3-26

4-1

1997 Flood Hydrograph for Yakima River at Union Gap

4-2

4-2

1996 Flood Hydrograph for Yakima River at Terrace Heights

4-3

4-3a

Keyes Road, May 1948

4-5

4-3b

Selah Gap, Looking Upstream

4-5

4-3c

Selah, Looking Downstream to Selah Gap, February 1996

4-6

4-3d

City of Yakima Sewage Treatment Plant, February 1996

4-6

4-3e

Yakima River at Union Gap, Looking West, February 1996

4-7

4-3f

Yakima River Capturing Edler Pond, near I-82 East of Union Gap, May 18, 2006

4-7

4-4

Areas of Rapid Channel Migration

after 4-8

4-5

Distribution of Public Assistance for the February 1996 Flood

4-13

4-6

County Roads Affected by 1990-1996 Floods

after 4-14

4-7

1995 Flood Damage by Drainage Area

4-16

5-1

Diking District #1

after 5-12

5-2

Yakima Greenway Master Plan

after 5-12

6-1

Typical Permit Timing Requirements

6-16

8-1

Identified Flooding Issues

after 8-2

8-2

Aerial Photograph of Sportsmanís State Park and Vicinity

8-5

8-3

Aggradation (Stream Bed and Floodplain Rise) at Sportsmanís State Park

8-6

8-4

Stream Power Graphic

8-7

8-5

Change in Bed Elevation Upstream and Downstream of SR 24

8-8

8-6

Cross Section Location at the Newland Pit

8-9

8-7

LiDAR Generated Cross Section

8-10

8-8

Bureau of Reclamation and other Pubic Ownership in the Gap-to-Gap Reach

8-13

8-9

Proposed Central Pre-Mix East Valley Gravel Mine and Associated Properties

8-14

8-10

Proposed Enhancement Area and Current Location of Diking Improvement

District #1 Levee, Proposed Central Pre-Mix East Valley Mine

8-15

8-11

Incremental Changes for Various Levee Conditions

8-20

8-12

Regulatory Floodplain and DID #1 Levee Downstream of SR 24

8-24

8-13

Yakima Valley Mineral Potentials

after 8-26

8-14

Location of Levee Erosion below Terrace Heights Bridge near the Beech St Pit

8-26

8-15

Comparison of the Water Surface Gradients through Selah Gap and Union Gap

8-31

8-16

The 100-Year Flood Profile through Union Gap

8-32

8-17

Cross-Section Location

8-33

8-18

Cross-Section of Floodplain near Union Gap

8-34

8-19

Areas of Aggradation in the Vicinity of the City of Union Gap

8-35

8-20

Backwater Channels for Fish Habitat Enhancement

8-62

8-21

Identified Structure in the Floodplain

after 8-64