Top Banner
James Houle Program Manager UNH Stormwater Center
22

Green Infrastructure

Jul 11, 2015

Download

Education

riseagrant
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Page 1: Green Infrastructure

James HouleProgram Manager

UNH Stormwater Center

Page 2: Green Infrastructure

Context

• Climate Mitigation is all about carbon (reducing emissions)

• Climate Adaptation is all about water

Page 3: Green Infrastructure

General Outline

• Problem:  There are changing patterns and there need to be new innovations for municipal infrastructure built with more useful and relevant data.

• Solutions:  Widespread application of GI incorporating storage and flexible conveyance in the landscape

• Benefits:  improve local community resilience, or the ability of a community to bounce back quickly from climate impacts 

Page 4: Green Infrastructure

Climate Solutions New England (CSNE), 2014

Page 5: Green Infrastructure

Extreme Events Increasing

% increase from 1958‐2012 in the amount of precipitation from extreme rain events (heaviest 1% of all daily events from 1958‐2012

Source: Kenneth Kunkel, Cooperative Institute for Climate and Satelites, Noreth Carolina Sate and NOAA NCDC

Page 6: Green Infrastructure

• NOAA Rainfall data last updated  in 1963

• Research examining impacts including the last 50 yrs show that 28‐60% increase rainfall depths (Guo 2006)

• infrastructure design today relies on outdated data

Page 7: Green Infrastructure

Infrastructure will be increasingly compromised by climate‐related hazards, including sea level rise, coastal flooding, and intense precipitation events.

Source: Antioch University of New England, 2009

Page 8: Green Infrastructure

Not if…. When…

Source:Shaleen Jain, UMaine Civil & Environmental Engineering & Climate Change Institute (2012)

Page 9: Green Infrastructure

Three things you can do now

1.)  Use up‐to‐date design standards2.)  Include multiple no‐risk improvements to all designs3.)  Identify hotspots and implement preventative GI pilot projects

Page 10: Green Infrastructure

Improved Data

TP‐40 (1961)Northeast Regional Climate Center (NRCC, 2010)

Percent Difference

Event in yrs2 3.1 3.3 5%10 4.5 4.9 8%25 5.5 6.2 11%50 6.0 7.4 19%100 6.8 8.8 23%

Inches per 24 hrs

http://precip.eas.cornell.edu/

Page 11: Green Infrastructure

up‐to‐date code

http://www.southeastwatershedalliance.org/Final_SWA_SWStandards_Dec_2012.pdf

Page 12: Green Infrastructure

2013 Model Regulations$0 Cost Controls

http://www.southeastwatershedalliance.org/Final_SWA_SWStandards_Dec_2012.pdf

Page 13: Green Infrastructure

TSS (lbs) TP (lbs) TN (lbs)10‐years 1,471,440 4,470 122,40025‐years 3,678,600 11,175 122,400

Page 14: Green Infrastructure

Municipalities are facing decisions about the construction or reconstruction of water resource infrastructure today that will have a profound impact on the size, scope, cost of drainage, and relative risk years into the future.

Page 15: Green Infrastructure

15

Page 16: Green Infrastructure

Highest priority culvert was replaced with a bridge

16

Page 17: Green Infrastructure

17

Page 18: Green Infrastructure
Page 19: Green Infrastructure
Page 20: Green Infrastructure
Page 21: Green Infrastructure
Page 22: Green Infrastructure

Questions?