INTERSECTIONS OF OUR ROADS AND RIVERS · 2018. 9. 20. · Cheryl Bondi Mary Ann Tilton Fish and...
Transcript of INTERSECTIONS OF OUR ROADS AND RIVERS · 2018. 9. 20. · Cheryl Bondi Mary Ann Tilton Fish and...
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1 7 , 0 0 0
c r o s s i n g s !
INTERSECTIONS OF OUR
ROADS AND RIVERS
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NEW HAMPSHIRE
STREAM CROSSING INITIATIVE
MISSION
Inventory stream crossings throughout
the state to inform data-driven decisions
on culvert replacement and stream
restoration
Multi-agency partnership
Address the complex problem of
undersized and deficient crossings
across the state
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Facilitate communication and organize
effor ts among partners
Consistent data collection and analysis
Reduce redundancy in efforts
Inventory state’s infrastructure
Field surveys
Streamlined protocol to address all
agencies’ interests
Develop standardized ranking system
to assess flood risk , geomorphic
compatibility, and aquatic organism
passage
Target good restoration and mitigation
PROGRAM GOALS AND STRATEGY
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STREAM CROSSING ASSESSMENTS
Combined protocol to
meet all agency
objectives Geomorphic
Compatibility
Aquatic Organism
Passage
Structure Condition
Hydraulic Vulnerability
General river
environment
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ELECTRONIC DATA COLLECTION
AND ONLINE GEODATABASE
ESRI Arc GIS online and
Collector App
GPS enabled
Create a new data and
picture points for each
survey location
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ELECTRONIC DATA COLLECTION
AND ONLINE GEODATABASE
ESRI Arc GIS online and
Collector App
GPS enabled
Create a new data and
picture points for each
survey location
Menu appears with the data
form with drop-down options
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Online
geodatabase
Real-time data
acquisition
Hosted by UNH
Technology
Transfer System
STATEWIDE ASSET DATA EXCHANGE
SYSTEM- “SADES”
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QUALITY CONTROL FOR DATA
CONSISTENCY
Online QAQC process
lead by NH Geological
Survey
Data reviewed by
NHGS staff
Update status in real-
time
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SCREENING TOOLS TO RANK
CROSSINGS
1. Geomorphic Compatibility How well the crossing
fits river shape and if it impedes
sediment transport
2. Aquatic Organism Passage Describes whether structure is
passable by fish and other animals
3. Hydraulic Vulnerability Can crossing convey water volume for
10, 25, 50, and 100 year events
4. Asset Condition DOT structure assessment
Visual rating of good, fair, poor
WORSTBEST
Fu
lly
co
mp
ati
ble
Mo
stl
y
co
mp
ati
ble
Pa
rtia
lly
co
mp
ati
ble
Mo
stl
y
inc
om
pa
tib
le
Fu
lly
inc
om
pa
tib
le
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FLOOD HISTORY DATA FROM TOWN
HAZARD MITIGATION PLANS
Towns document flood hazards
Extract data on stream crossings
and digitize
Hazard
Type
Location Severity Frequency Description
Road
flooding
Main Street High Annual 24” metal pipe overtops in the spring with
high flows and causes road closures.
Washout Elm Street Medium 2-5 years Bridge has become obstructed at high
flows and water over the banks will cause
road erosion.
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MULTIPLE PARTNERS ARE
COLLECTING DATA STATEWIDE
Regional Planning
Commissions
NHDES funded projects
from federal grant
programs
NHFG collaborations
and external grants to
fund crossings in Brook
Trout streams
Non-profit and
consulting
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TRYING TO ACHIEVE STATEWIDE
COVERAGE IN ASSESSMENTS
7,500 crossings surveyed
~5,400 scored for AOP and GC
Many surveys incomplete or have
QAQC problems
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PRIORITIZING CULVERT REPLACEMENTS
FOR RESTORATION AND MITIGATION
Improving flood
resiliency and public
safety
Improving aquatic
connectivity
Individual stakeholder
goals
Target funding
eligibility
Scores together can help
asses the overall impacts of
a crossing
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PRIORITIZING CULVERT REPLACEMENTS
FOR RESTORATION AND MITIGATION
High quality fish and wildlife
habitat
Diadromous fish corridors
Maximize upstream habitat
gained
Connecting conservation land
and habitat corridors
Presence of species of concern
Already a focus of existing
conservation/restoration efforts
Water quality concerns
Ecological factors that play
an important role in
prioritization
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Data delivery issues
and objectives
How do we make stream
crossing data available to the
public?
Easily accessible
Interactive
Query and filter
Export data
PRIORITIZING CULVERT REPLACEMENTS
FOR RESTORATION AND MITIGATION
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PRIORITIZING CULVERT REPLACEMENTS
FOR RESTORATION AND MITIGATION
Data delivery issues
and objectives
How do we make stream
crossing data available to the
public?
Easily accessible
Interactive
Query and filter
Export data
Include tools to:
Prioritize structures on scores
Identify projects eligible for
specific grant programs
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Interactive mapping tool to target restoration and
mitigation to improve stream connectivity,
restore important fish habitat, and increase
flood resiliency.
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SCREENING TOOLS TO
RANK CROSSINGS
Geomorphic Compatibility-
How well does a crossing fit natural
channel forming and sediment transport
processes of a river?
GC
AOP
10 25
50 100
C
Co
mp
ati
bilit
y R
an
k
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SCREENING TOOLS TO
RANK CROSSINGS
Aquatic Organism Passage
How much of a barrier is the crossing to
fish and other animals?
GC
AOP
10 25
50 100
C
Fis
h P
assa
ge
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SCREENING TOOLS TO
RANK CROSSINGS
Asset Condition
Is the integrity of the structure compromised
due to weathering, damage, and exposure?
GC
AOP
10 25
50 100
C
Ove
rall C
on
dit
ion
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SCREENING TOOLS TO
RANK CROSSINGS
Hydraulic Vulnerability
Predicts flow capacity 10, 25, 50,
100 year flows?
GC
AOP
10 25
50 100
C
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Flag culverts that have
flooded in the past
FLOOD HAZARDS AT STREAM CROSSINGS
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This culvert has
been identified as
a flood hazard
Also preventing
passage between
conservation
parcels
highest ranked
habitat
Brook Trout
habitat
Good ARM
candidate!
PRIORITIZE REPLACEMENTS TO MEET
INDIVIDUAL PROGRAM/FUNDING GOALS
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THANK YOU!
Geological Survey
Shane Csiki
Thomas Taggart
DES Wetlands Bureau
Lori Sommer
Cheryl Bondi
Mary Ann Tilton
Fish and Game, Inland Fisheries
John Magee
Matt Carpenter
Dianne Timmins
Ben Nugent
Katie Callahan
Homeland Security and
Emergency Management
Whitney Welch
Department of Transportation
Mathew Urban
Sarah Large
Timothy Mallet
Kevin Nyhan
Mark Hemmerlein
UNH Technology
Transfer Center
Christopher Dowd
NH Regional Planning
Commissions
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How are other states assessing wetland
crossings?
15% of NH’s crossing are on wetlands
How are state’s funding survey work?
Sharing information across state lines
for common watersheds.
For collaborative assessment efforts,
how do you ensure data quality and
consistency?
Volunteers and citizen scientists?
Non-profit groups
DISCUSSION TOPICS