Transcript Introduction to PA Act 167 Stormwater Management Planning

Introduction to PA Act 167
Stormwater Management Planning
Little Juniata River Watershed
April 21, 2005
Topics for Discussion
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Little Juniata River Watershed
Introduction to stormwater management
Overview of PA Act 167
Overview of the Little Juniata River Watershed Plan
Role of the Watershed Plan Advisory Committee
Review of activities to date
Anticipated next steps
Definition of Stormwater
Water that runs off from the
land as the result of rainfall
or snow melt
THERE ARE ISSUES!
Development Changes Land
Characteristics
Before
Development
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After
Development
Increased plant uptake and
evapotranspiration
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Less chance for evapotranspiration
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Increased infiltration to
groundwater
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Less opportunity for water to infiltrate
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Rapid, concentrated stream discharges
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Slow, dispersed runoff to streams
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More human activity
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LESS RUNOFF VOLUME
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LARGER RUNOFF VOLUMES
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LOWER PEAK DISCHARGE RATES
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HIGER PEAK DISCHARGE RATES
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PRISTINE WATER QUALITY
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POTENTIAL FOR WATER POLLUTION
Effects of Uncontrolled Stormwater
Runoff
Flooding
Reduced Groundwater Recharge
& Stream Baseflow
Erosion & Sedimentation
Water quality degradation
Stormwater Management in PA
•Prior to 1980
– Just get the water away from the site
•1980 to 2003
– Control the peak rate of discharge to protect
downstream persons and property
•Now
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Minimize increases in runoff volume
Control peak discharge rates
Maintain groundwater recharge
Protect water quality
Stormwater Management Programs
•PA Stormwater Management Act (Act 167)
– Counties stormwater management plans
– Municipalities to adopt and enforce stormwater ordinances in
conformance with the plans
•MS4 NPDES Program Requirements
– Designated municipalities implement a specific program of
best management practices designed to effectively manage
stormwater runoff
• PA Chapter 102 and NPDES Construction
Permitting Requirements
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Persons engaged in construction activities control erosion
and sedimentation impacts
Comprehensive Stormwater Policy
•PADEP Comprehensive Stormwater Policy
– Address water quality issues
– Sustain stream base flow and groundwater through
groundwater recharge
– Minimize flooding problems
– Prevent stream bank erosion
– Incorporate Act 167, E&S, and MS4 program elements
PA Act 167 Planning Objectives
Special
Protection
Waters
Infiltration
Groundwater
Recharge
Rate &
Volume
Control
Water
Quality
Technical
Assistance
Act 167
Stormwater
Management
Planning
Financial
Assistance
NPDES
Construction
Permit
Tailored
Municipal
Ordinances
NPDES
MS4
Permit
Little Juniata River Watershed
Municipality
County
Altoona City
Blair
Antis Township
Blair
Bellwood Borough
Blair
Frankstown Township
Blair
Logan Township
Blair
Snyder Township
Blair
Tyrone Borough
Blair
Tyrone Township
Blair
Dean Township
Cambria
Reade Township
Cambria
Rush Township
Centre
Gulich Township
Clearfield
Birmingham Borough
Huntingdon
Franklin Township
Huntingdon
Logan Township
Huntingdon
Morris Township
Huntingdon
Porter Township
Huntingdon
Spruce Creek Township
Huntingdon
Warriors Mark Township
Huntingdon
Little Juniata River Watershed
Drainage area =
181 square miles
Elevation range =
690’ to 2,590’
Number of named
tributaries =18
Number municipalities
=19
Little Juniata River Watershed
MS4
Municipalities
• Altoona City
• Antis Township
• Bellwood Borough
• Logan Township
Little Juniata Act 167 Plan
• Primary Objectives
– Achieve Compliance with PA Act 167 Watershed Planning
Requirements
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Document current stormwater management conditions
Investigate specific stormwater control requirements
Recommend specific stormwater control requirements
Develop and present model municipal stormwater ordinances
Provide forum for exchange of information
– Provide MS4 NPDES Permit compliance assistance
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Outfall mapping
Public education/participation
Ordinance development
State reimbursement for selected activities
Watershed Plan Advisory Committee
WPAC Members
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Representatives of affected municipalities
County agency representatives
Watershed association members
Other interested citizens
Role of the WPAC
• Information exchange from communities to
project team
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Identify and describe existing problems
Discuss local experiences
Describe status of stormwater management
Identify local management problems and strengths
Describe local expectations
Voice local concerns
Comment on plan recommendations
Role of the WPAC
• Information exchange from project team to
communities
– Define local Act 167 responsibilities
– Describe the goals and limitations of the Plan
– Increase local familiarity with stormwater Best Management
Practices and control techniques
– Describe plan recommendations
– Encourage local input into the process
– Support the adoption and
implementation of the Plan
Primary Activities to Date
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Project startup
MS4 mapping of outfalls
MS4 public education
Physical features data collection and analysis
Formation of the WPAC
Distribution of the municipal questionnaire
Municipal Questionnaire
• Purpose
– Provides a overview of stormwater conditions
– Indicates the types of controls currently in place
– Provides an early opportunity for municipal input into the
planning process
• Issues addressed
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Significant stormwater problems
Existing and proposed flood protection projects
Existing and proposed stormwater control facilities
Existing stormwater collection facilities
Next Steps
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Municipal questionnaire compilation and follow-up
Continued data collection and analysis
Review of existing municipal stormwater ordinances
2nd WPAC meeting
– Review of questionnaire results
– Review of existing watershed conditions
– Discussion of cause and effect relationship of land
development to stormwater runoff