View
215
Download
1
Category
Preview:
Citation preview
Pine Creek Flooding, Concord 1958
By: Mike Carlson Contra Costa County
Deputy Chief Engineer
Are we too late, or is a solution out there?
Disinvestment in Drainage
APWA 2016 PW Conference – November 3, 2016
By: Edric Kwan Town of Moraga Public Works
Director/Town Engineer
Overview
• Intro - your Speakers
• Understanding your Flood Control District
• The Contra Costa Experience
• Aging Infrastructure - City and County
• Funding for Drainage
• Fiscal Realities
• Next Steps
We All Live in a Waterhshed
This is a Watershed!
Anatomy of California Water Portfolio
Water Portfolio
Drinking Water Sector
Sanitary Sewer Sector
Stormwater Sector
Quality
Groundwater
Drainage
Flood
Overview
• Intro - your Speakers
• Understanding your Flood Control District
• The Contra Costa Experience
• Aging Infrastructure City and County
• Funding for Drainage
• Fiscal Realities
• Next Steps
Who is the Flood Control District?
• Special District of the State
• Formed in 1951
• Regional Flood Protection
• Work within Cities
Walnut Creek Flooding Walnut Creek 1958
Walnut Creek Flooding, Walden Road 1958
Contra Costa County Experience Communities in the Flood Plain
Concord and Pleasant Hill 1948
Contra Costa County Experience Communities in the Flood Plain
Post WW II building boom
Five Years Later
Contra Costa County Experience Communities in the Flood Plain
• Post WW II building boom
• 1955/1958 floods galvanized support
Contra Costa County Experience Communities in the Flood Plain
• Post WW II building boom
• 1955/1958 floods galvanized support
• 80% - 90% federal investment
Drop Structure Under Construction
• 79 miles of channels
• 29 detention basins/dams
Regional Flood Protection Infrastructure
Overview
• Intro - your Speakers
• Understanding your Flood Control District
• The Contra Costa Experience
• Aging Infrastructure City and County
• Funding for Drainage
• Fiscal Realities
• Next Steps
Types of Flood Protection Infrastucture
Marsh Creek Dam, Marsh Creek Road near Brentwood Built in 1962 by USDA Soil Conservation Service
Rodeo Creek Flood Control Channel at San Pablo Avenue in Rodeo Built in 1965 by US Army Corps of Engineers
Types of Flood Protection Infrastucture
San Ramon Creek Drop Structure No. 9 at Diablo Road in Danville Built in 1957 by USDA Soil Conservation Service
Types of Flood Protection Infrastucture
Types of Flood Protection Infrastucture
Wildcat Creek Flood Control Channel at Giaramita St. in No. Richmond Built in 1988 by US Army Corps of Engineers
Overview
• Intro - your Speakers
• Understanding your Flood Control District
• The Contra Costa Experience
• Aging Infrastructure City and County
• Funding for Drainage
• Fiscal Realities
• Next Steps
Showing Signs of Age
San Ramon Creek Drop Structure, Alamo in 1995 - $500,000 repair cost
Only the County has problems with aging storm drain systems, the cities are all well funded and
everything is in pristine conditions!
Moraga’s Aging Storm Drain System
Laguna Creek Wall Repair & Bank Stabilization Project
• 2005 storm damage • Retaining walls, head
walls, wing walls, creek banks, and the slopes of Laguna Creek washed out and damaged
• Lengthy environmental and approval process
• 2013 Repaired • FEMA Funded • Total Costs $1.1M
Moraga’s Aging Storm Drain System
Calle la Mesa Storm Drainage Repair Project
• 2012 Storm Damage • Sinkhole Developed on
Storm Drain Easement • 2013 Repaired • Cost Share with Lafayette • Total Cost $189K
Moraga’s Aging Storm Drain System
Rheem/St. Mary’s Culvert Replacement Project
• 2016 Vice Mayor reports Sinkhole off roadside
• Challenge finding contractors to repair
• NPDES Funds • Estimated Cost $25K
Moraga’s Aging Storm Drain System
Rheem Boulevard/Center Street Sinkhole • 15’ wide x 20’ long x 15’ deep sinkhole developed at the
Rheem/Center intersection • 96” CMP conveying Laguna Creek damaged • FHWA funding initially denied but now approved • Lengthy environmental and approval process • Projected construction to start 2017 • Estimated Costs $3.3M
Moraga Sinkhole
Moraga Sinkhole
Overview
• Intro - your Speakers
• Understanding your Flood Control District
• The Contra Costa Experience
• Aging Infrastructure City and County
• Funding for Drainage
• Fiscal Realities
• Next Steps
Stormwater Funding
Current Revenue Sources
• NPDES Funds
• Storm Drain Impact Fees
• Measure K Sales Tax
How our Flood Protection is Funded
Percent of Entire Tax Bill - Based on $500,000 home in Walnut Creek
$0 $500 $1,000 $1,500 $2,000 $2,500 $3,000 $3,500
Pro
pert
y T
ax A
lloca
tion
Bay Area Air Quality: $10 = 0.16%
CCC Mosquito Abatement Dist.: $13= 0.21%
County Clean Water: $35 = 0.57%
County Flood Control: $46 = 0.75%
BART: $55 = 0.88%
EBMUD Water: $78 = 1.3%
East Bay Regional Parks: $188 = 3.0%
CCCSD Sewer: $472 = 7.6%
City of Walnut Creek: $536 = 8.7%
Fire/Emergency: $670 = 11%
County General Fund: $779 = 13%
Schools: $3305 = 53%
Society’s Investment in Stormwater
Annual Costs Based on $500,000 home/family in Walnut Creek
$46
$360 $472
$750
$1,440
$1,800
$2,400
Co Flood Garbage Sewer Water Cab/Ph/Net PG&E Cell Phone
State Expenses Comparison
CA Natural Disasters Damages
0
20
40
60
80
100
120
140
160
Severe Weather Earthquake Wildfire Flood
Mill
ions
Source: Cal EMA 10 year Disaster History, 2013
Overview
• Intro - your Speakers
• Understanding your Flood Control District
• The Contra Costa Experience
• Aging Infrastructure City and County
• Funding for Drainage
• Fiscal Realities
• Next Steps
Contra Costa FCD, $1 Billion Investment 1951 – 2010
$-
$5
$10
$15
$20
$25
$30
$35
$40
$45
$50
1950 1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005 2010
Mil
lio
ns
Federal
State/Local
Adjusted to 2010 dollars
Infrastructure Replacement Need based on 75 year service life
1954 2010 2029 2085
$1 B
illi
on
Infrastructure Investment Capital Replacement
$2.4
Bill
ion
Infrastructure Age at 2020
0-25 years, 4%
26-50 years 59%
50+ years 37%
Lets look at the whole State - DWR Report Findings
• $50 Billion needed for identified and developed projects
• $100 Billion needed for known problems without developed solutions
• 1 in 5 Californians live in a floodplain
• $570 Billion in structures at risk of flooding
Alhambra Creek Flooding, Downtown Martinez 1997
Pine Creek Flooding, Market at Belmont, Concord 1958
From the State Report, Contra Costa County Facts
40,000 residents live in a floodplain
Contra Costa County Facts
• 40,000 residents live in a floodplain
• $48 Million crop value in floodplain
Byron Flooding 1958
Wastewater Treatment Plant Adjacent to Grayson Creek
Contra Costa County Facts
• 40,000 residents live in a floodplain
• $48 Million crop value in floodplain
• $4.9 Billion value of buildings in floodplains
Overview
• Intro - your Speakers
• Understanding your Flood Control District
• The Contra Costa Experience
• Aging Infrastructure City and County
• Funding for Drainage
• Fiscal Realities
• Next Steps
Stormwater Funding
Future Funding Initiative
• 2015 Adopted Storm Drain Master Plan = Determine Needs
• 2016 Community Priority Survey = Community Support
• 2016 Town Council Goal = Political Support
• Successful Measure K = Community Trust
• Next Step Feasibility Study = Determine Funding Initiative
Contra Costa County Example
• 2012 Clean Water Funding Initiative
• Property related fee
• Ballot sent to all County property owners
• Process time: 1 ½ years
• Cost: $1.5 million
• Outcome: 60% “No” votes
Current Water Portfolio
Drinking Water Sector
Sanitary Sewer Sector Stormwater Sector
Quality
Groundwater
Drainage
Flood
Water Utilities
Cities, Counties, Flood Control Districts Wastewater Utilities
Rate Structure No Rate Structure Rate Structure
Voting Exempt Voting Required Voting Exempt
218 1996
= Voting Requirements
Any property related fee or charge requires approval of a majority vote of property owners or two-thirds vote of electorate in the service area except fees or charges for sewer, water, and refuse collection services.
• Stormwater fees/charges are property related fee, but are not “water” or “sewer” for purposes of the exemption.
• Fee or charge cannot exceed “the proportional cost of the service attributable to the parcel.”
Stormwater Funding Solution….A state wide solution.
• Goal: Provide “utility” status for stormwater with a process to raise revenue similar to water districts and wastewater districts
• Need a Constitutional Amendment approved by the legislature (67% vote) to establish a ballot measure
• California voters will decide whether stormwater should have “utility” status (50% vote)
• Local Control: Each local government agency/area, if desired, goes through a political process to establish a “Stormwater Utility” and adopt a stormwater fee
Current Status
• Coalition working on Constitutional Amendment
• Aiming for 2016 election
• Concept expanded to include:
– Stormwater
– Conservation Rates
– Lifeline Rates
Groundwater Supply
Title is……
Regional Flood Protection
Stormwater
Stormwater Quality Community Drainage
San Ramon Creek Flooding Walnut Creek 1955
Same Location Today
Same Location w/o Flood Protection
For more information: www.cccounty.us/FCDreports
Recommended