Thorn Coughran, P.E., Interim Public Works and Utilities ...
Palm Beach County Water Utilities Department€¦ · Palm Beach County Water Utilities Department...
Transcript of Palm Beach County Water Utilities Department€¦ · Palm Beach County Water Utilities Department...
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Palm Beach County
Water Utilities Department
Maurice Tobon, P.E. Director of Engineering
Stephen McGrew, P.E., Manager Plant Design
May 2011
Climate Change Impacts
and Infrastructure
Adaptation
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AWWA Statement on Climate
Change
The American Water Works Association
recognizes that global climate changes will
have major impacts on the hydrologic cycle
and, therefore, have the potential to
significantly affect water supplies.
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Global Climate Change Affects
South Florida will be most affected by these
climate change impacts:
Sea Level Rise
Salt Intrusion
Flooding
Inflow & Infiltration
Tropical Storm Activity
Storm Frequency
Storm Intensity
Precipitation Patterns
Wetter wets, dryer dries
Future Demand Forecast
Population Growth/Loss
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Sea Level Rise
Source: A Unified Sea Level Rise Projection for Southeast Florida,
Southeast Florida Regional Climate Change Compact Counties April 2011
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Increased Tropical Activity
Emanuel, 2007 “Power Dissipation Index” (PDI) of tropical cyclones, defined
as the sum of the cubed estimated maximum sustained surface wind speeds at 6-hour
intervals accumulated over each Atlantic tropical cyclone from the late 1940s to 2003.
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Increased Tropical Activity
Modeled Impact of Anthropogenic Warming on the Frequency of Intense Atlantic Hurricanes
Morris A. Bender, Et al. 2010
.
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Greater Rainfall Variability
Source: Climate Change & Water Management, SFWMD Nov, 2009
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Utilities Infrastructure Adaptation
Diversification of Water Resources
(Lack of Regional Storage and Herbert Hoover Dike
Repair at Lake Okeechobee)
Hurricane Hardening and Disaster Recovery
Salt Water Intrusion/Inland Supply
Facility Planning
Reducing Infiltration/Inflow
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Diverse Water Resources
ASR (Aquifer Storage and Recovery)
C-51 Reservoir (surface water storage)
Wastewater Reuse (supplement local
groundwater, multiple use water)
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C-51 Reservoir
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WEAP Model Created a Dynamic Decision Support System (D2S2) in
conjunction with Water Research Foundation (WRF)
UF, and the National Center for Atmospheric Research
(NCAR) and PBS&J
Used Water Evaluation and Planning Tool (WEAP)
platform, developed by the Stockholm Institute
Includes 112 climate change projections
High level planning model, calibrated with over 20
years of past climate data and canal levels
Incorporates population projections and the PBC WUD
Capital Improvement program
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WEAP Model Results
Reservoir Storage
Dry
Wet
Reservoir Storage Volume
All Reservoirs (7), All months (12)
May
2009
Apr
2010
Mar
2011
Mar
2012
Mar
2013
Mar
2014
Feb
2015
Feb
2016
Feb
2017
Feb
2018
Feb
2019
Jan
2020
Jan
2021
Jan
2022
Jan
2023
Dec
2023
Dec
2024
Dec
2025
Dec
2026
Nov
2027
Nov
2028
Nov
2029
Nov
2030
Oct
2031
Oct
2032
Oct
2033
Oct
2034
Sep
2035
Sep
2036
Sep
2037
Sep
2038
Aug
2039
Aug
2040
Aug
2041
Aug
2042
Aug
2043
Jul
2044
Jul
2045
Jul
2046
Jul
2047
Jun
2048
Thousand A
cre
-foot
8,900
8,800
8,700
8,600
8,500
8,400
8,300
8,200
8,100
8,000
7,900
7,800
7,700
7,600
7,500
7,400
7,300
7,200
7,100
7,000
6,900
6,800
6,700
6,600
6,500
6,400
6,300
6,200
6,100
6,000
5,900
5,800
5,700
5,600
5,500
5,400
Includes: Kissimmee Lakes, Lake Okeechobee, C-51, L-8
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Reclaimed Water – 25 MGD
Created Wetlands – 5 MGD
Industrial Cooling Water Reuse for the FP&L West County Energy Center- 27 MGD
Palm Beach County Water Utilities Water Conservation Leader in South Florida – over 13 billion gallons/year
Alternative Water Supply
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Wakodahatchee Wetlands
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Hurricane Preparedness
Hardening of Facilities
Water and Wastewater Plants
Regional Pump Stations
Operations Centers
Designing Cat 5 Communications and Server Rooms
Post Disaster Recovery
FlaWARN - Mutual Aid
Design-Build Contract for Emergency
Rebuilding
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Hurricane Hardening Treatment
Facilities
Removing Skylights
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Hurricane Hardening Treatment
Facilities
Removing Older Shutters and
Installing Impact Windows
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Hurricane Hardening Treatment
Facilities
Intake Wall to Block Wind Blown Rain
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Salt Water Intrusion/Inland Supply
Salt water intrusion will limit water supplies
to the coastal communities.
Maintain excess water treatment capacity to
allow supply of coastal communities with
potable water.
Salt Water Intrusion will affect Reclaim
Water Quality due to Inflow and Infiltration
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Salt Water Intrusion
Source: USGS
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Excess WTP Capacity
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Water Interconnects
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Have a plan to
address rapid
increase in
population.
– Future Northern
Region WTP, site
plan approved.
Facility Planning
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Reducing Infiltration/Inflow
Increase in Infiltration/Inflow in to the sewer
systems caused by higher GW levels and more
intense rainfall.
In some areas up to 50 percent of the wastewater
flow is caused by infiltration/inflow. As GW levels
and storm intensity increase this will worsen.
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Infiltration/Inflow Reduction
Gravity Sewer Lining
Manhole Lining
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Best Water, Best Service,Best Environmental Stewardship