hamilton drain · 2017-10-19 · hamilton drain east system | highland park neighborhood –...
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Hamilton Drain East System Storm Sewer Improvements
Highland Park Neighborhood – October 19, 2017
Hamilton Drain East System | Highland Park Neighborhood – 10/19/2017
Q: What is the ‘Hamilton Drain?’
A. Many years ago, there was a county
drainage district in this area called the
“Hamilton Drain.” The drainage district
no longer exists, but the name has
stuck to this day.
The eastern portion of this old drainage
district is the subject of tonight’s
meeting.
Hamilton Drain East System | Highland Park Neighborhood – 10/19/2017
EUCLID AVE.
AURORA AVE.
NEVADA AVE. 2
ND A
VE
.
E 1
4T
H S
T. (U
S 6
9)
WALFLEY CREEK
Northside
Community
Center
LANDMARKS
1 – Madison Elementary
2 – Turner Park
3 – Radio City Mobile Home Park
4 –Harding Middle School
5 – Park Fair Mall / Fareway
1
2
3
4
Project Area
5
Hamilton Drain East System | Highland Park Neighborhood – 10/19/2017
Q: Why is a project needed? A. The project area is prone to flooding.
Some of the major storm sewers in this area were built in the 1930s, and do not meet today’s standards.
CURRENT STANDARDS:
1. Storm sewer system must carry runoff from a 5-year
storm entirely inside the pipe.
2. Storm sewer system must carry runoff from a 100-year
storm with only moderate flooding on the surface (no
damage to buildings).
Hamilton Drain East System | Highland Park Neighborhood – 10/19/2017
Computer Modeling Results: 5-Year Storm
Hamilton Drain East System | Highland Park Neighborhood – 10/19/2017
Computer Modeling Results: 100-Year Storm
“Rocky Place Storm Sewer”
FEMA Flood Hazard Areas
(green & yellow boundaries)
Hamilton Drain East System | Highland Park Neighborhood – 10/19/2017
“Rocky Place Storm Sewer”
Built in the 1930s from creosote-treated wood planks.
Much of the neighborhood was then built over it. (48 properties; 15 buildings)
Condition varies, but City has recently repaired some sections.
Varies in size from 18”x24” up to 5’x7’
Hamilton Drain East System | Highland Park Neighborhood – 10/19/2017
Q: How do I know if my property is affected?
A. We have a list of all properties in the FEMA Flood
Hazard Areas.
The list also shows which properties and buildings are
located above the Rocky Place Storm Sewer.
Hamilton Drain East System | Highland Park Neighborhood – 10/19/2017
Q: What can be done about this?
A. The City will explore several
alternatives. The best alternative will be
determined by considering economic,
social and environmental factors.
ALTERNATIVES MAY INCLUDE:
New storm sewers in some locations
“Green Solutions” to capture, filter or reduce runoff
Purchasing property in select locations
There will be another public meeting in early 2018 (possibly January), when the City identifies a preferred alternative.
Hamilton Drain East System | Highland Park Neighborhood – 10/19/2017
Green Solutions
Detention Basins / Wetlands Rain Gardens / Bioretention
Hamilton Drain East System | Highland Park Neighborhood – 10/19/2017
Q: How will the project be funded? A. The City has included funding from existing storm water utility fees for this project in the current Capital Improvement Program budget over the next several years. No fee increases or property assessments are anticipated for this project.
Hamilton Drain East System | Highland Park Neighborhood – 10/19/2017
Q: What can I do to help? A. Please take our survey, either here tonight or online at your leisure. The survey will ask about your experience with flooding, and your interest in selling property.
Survey responses are due by November 22, 2017.
www.HamiltonDrain.org
Please tell your neighbors about the website!
Hamilton Drain East System | Highland Park Neighborhood – 10/19/2017
Questions from the Audience?
Hamilton Drain East System | Highland Park Neighborhood – 10/19/2017
Contact Information
Chad Mason, P.E.
5525 Merle Hay Rd.
Suite 200
Johnston, IA 50131
(515) 657-5280
Bruce Rydberg, P.E.
400 E. Court Avenue
2nd Floor
Des Moines, IA 50309
(515) 283-4074