PUBLIC MEETING #3 APRIL 3, 2019 WELCOME UNDERSTANDING OUR FLOOD - - PowerPoint PPT Presentation

PUBLIC MEETING #3 APRIL 3, 2019

WELCOME

UNDERSTANDING OUR FLOOD CONDITIONS

Identify practical solutions to alleviate flooding, improve water quality and create multiple benefits for the community

STUDY PURPOSE

NEW APPROACH

COMMUNITY LED PROCESS Three Community Meetings Stakeholder Vision Implementation Team held nine meetings over the past year

PRIMARY GOALS

• 1. Alleviate Local Stormwater Flooding
• 2. Reduce the Risk of River Flooding and avoid Floodplain Designation
• 3. Improve Water Quality

SUPPORTING COMMUNITY GOALS

• 1. Create Innovative Solutions that provide Community Benefit and Reconnect the

Community

• 2. Encourage Natural and Sustainable Solutions
• 3. Provide Individual Support against Flooding; Communicate Flood Risk, Strengthen

Community Partnerships and Improve Safety during rain events

• 4. Coordinate with and Leverage Concurrent Projects in the area
• 5. Be Consistent with the Globeville Neighborhood Plan

STUDY GOALS

SCHEDULE

WE ARE HERE TODAY!

GLOBEVILLE BASIN

STUDY AREA CONTEXT | TOPOGRAPHY | TYPES OF CHALLENGES

STUDY AREA CONTEXT

STUDY AREA

TYPES OF FLOODING CHALLENGES IN THE BASIN

Local Flooding Denver 06/2015 Regional River Flooding Boulder 09/2013

Stormwater (Localized) Flooding River (Regional) Flooding

DENVER’S NATURAL TOPOGRAPHY

Elevation Low 5118 High 5480

RIVER IN THE DENVER METRO AREA

Globeville-Utah Junction Topographic Drainage Basin

TOPOGRAPHIC CHANGE & DENVER PACIFIC RAILROAD DEVELOPMENT STARTS TO FILL FIRST NORTH-SOUTH SUBDIVISIONS BELLVIEW & CEMETERY DEVELOPMENT ON EASTERN HILLS

1874 - DENVER’S TOPOGRAPHY & DEVELOPMENT

HISTORIC RELATIONSHIP WITH THE RIVER

1920s – Flood Control 1965 – Floods 2008 – Levee

SOUTH PLATTE RIVER CHARACTER

2017 South Platte River through Denver 2017 South Platte River south of Evans

SPILL LOCATION

RIVER RELATED PROJECTS PLAN | LEVEE

• Avoid FEMA floodplain designation
• Raise and extend the Levee to address flooding, coupled with
• ngoing Public Works efforts to address bridges along the river.

STORMWATER

Local Flooding Denver 06/2015

Stormwater (Localized) Flooding

NATURAL ENVIRONMENT - TOPOGRAPHY

NATURAL ENVIRONMENT - HISTORIC

• Old River

Bed (1862)

• Old River

location vs South Platte River Today

BUILT ENVIRONMENT – RAILROADS (SILVER BOOM)

• Railroads to

Denver (1870)

• Smelter

begin to locate in area (1878)

• Silver Boom

(1879)

PARCELS

Before 1889

BUILT ENVIRONMENT – HIGHWAYS

• I-25 (1958)
• I-70 (1964)
• Rennick

Yards (1977)

PARCELS

Before 1889 1890 - 1899 1900 - 1933 1934 - 1947 1948 - 1995

BUILT ENVIRONMENT/TOPOGRAPHY

• 1. Elevation and

Topography

• 2. Built

Environment

LOCALIZED FLOODING

1. Elevation and Topography 2. Built Environment 3. Resulting Water Flow RESULTS

• Potential

Inundation Areas in Globeville Neighborhood

DEVELOPING SOLUTIONS: CHOOSING A NEW DIRECTION

All Pipe Approach

(Gray)

• “Controlling/Managing” Nature

(Water)

• Historical Pattern
• No above –grade benefits

Hybrid Approach

(Gray + Green)

• “Restoring / Reconnecting /

Reconnecting” with Nature (Water)

• Undoing of historical patterns
• Multiple Benefits

RECOMMENDATIONS BY SECTION OF THE BASIN

RANGE OF RECOMMENDATIONS

STRENGTHENING PARTNERSHIPS

• PLATTE FARM OPEN SPACE
• Rain Barrel Demonstration
• Denver Green Teams Program
• Youth groups with stormwater &

water quality focus

• Individual Strategies support

HERON POND, HELLER & CARPIO-SANGUINETTE PARK

THANK YOU