Byron Madigan

Water Resources Supervisor

Bureau of Resource Management

Carroll County, MD

Watershed Planning “From Assessment to Implementation”

Introduction

• NPDES Background

• Next Generation Permit

• Issued December, 2014

• Urban Wasteload Allocation

• Water Resources Coordination Council (WRCC)

• Carroll County Government

• Carroll County Health Department

• Eight (8) Municipalities

• Memorandum of Agreement (MOA)

County & Municipal MOA

• Phase II requirements

• Purpose

• Cost Share

• County share (80%)

• Municipal share

• Annual payment

• County Responsibility

• Permit Administration/Compliance

• Municipal Responsibility

• Permit compliance support/assistance

Watershed Planning

• NPDES Requirements (Monitoring & Assessment)

• Stream Corridor Assessments (SCA)

• Implementation Strategies

• Restoration Plans and TMDL’s

• Assessment of Controls (discharge characterization)

• Chemical Monitoring

• Biological Monitoring

• Physical/geomorphic monitoring

• I.D.D.E. Sampling

• Provide sufficient data for each problem to determine severity and correctability.

• Prioritize restoration efforts based on information collected for each impairment.

What are the objectives of the SCA?

• Provide list of observable environmental problems within a stream and along its corridors.

Potential Impairments

Erosion

Channel Alteration

Inadequate Buffer

Trash Dumps

Exposed Pipes and Pipe Outfalls

Fish Blockages

Unusual Conditions

In-Stream Construction

Not Carroll County

Prioritizing

Additional Information Collected:

• Adjacent Land Use

• Possible Cause

• Livestock Present

• Erosion Extent (length/Height)

• Type (Erosion attribute)

• Downcut, headcut, or widening

• Threat to infrastructure (Erosion)

• Presence of Utilities (Buffer)

• Location Plantable?

• Blockage Type (Fish Barrier)

• Type of Alteration

• Location of Exposed Pipe

• Bottom of stream, streambank

Impairment Ratings 1) Severity:

1= Most Severe (wide reaching impact on aquatic life) 5= Least Severe (very little impact to stream corridor)

2) Correctability:

1= Minor (fixable with hand labor) 5= Major (require heavy equipment and significant funding

3) Accessibility

1= Easily accessible by car or on foot 5= Difficult to access by foot

Stream Corridor Assessments

Watersheds Assessed

8-Digit Watershed

Major Basin Miles

Assessed Total Miles % Assessed

Year Assessed

Prettyboy Gunpowder 80 97 82% 2011

Liberty Patapsco 255 458 56% 2012

South Branch Patapsco

Patapsco 156 218 72% 2013

Lower N. Branch

Patapsco

Patapsco 6 6 100% 2014

Lower Monocacy

Monocacy/Potomac 10 23 43% 2014

Conewago Creek

Susquehanna 11 18 61% 2014

Upper Monocacy

Monocacy/Potomac 70 128 55% 2015

Total: 588 948 62%

Watersheds To Be Assessed

8-Digit Watershed

Major Basin Miles

Assessed Total Miles % Assessed

Year Assessed

Double Pipe Monocacy/Potomac 529 2016

SCA Initiatives

• Roads Department

• Collapsed/Undersized Culverts

• County/Municipal Utilities

• Exposed Sewer Pipes

• Erosion/Outfall Analysis

• GIS + Upland Survey

• MS4 Storm Drain Network

• Stream Buffer Initiative

• Governor’s Stream Restoration Challenge

Stream Buffer Initiative Prettyboy Watershed • 4.74 Acres • Spring 2013

Liberty Watershed • 13.56 Acres • Spring 2014

South Branch Patapsco • 9.43 Acres • Fall 2014

Fall 2015- 22 additional acres being implemented

Lower Monocacy • 12 Acres • Fall 2013

Upper Monocacy • 13.7 Acres • Fall 2014

Double Pipe Creek • 32.4 Acres • Fall 2014/Spring 2015

• Annual MS4 Questionnaire

• Alternative BMP’s

• WWTP Connections

• Street sweeping/Inlet cleaning

• Impervious to pervious

• Health Department

• Septic Upgrades

• Center for Watershed Protection

• Document Review

• Modeling (Mapshed)

• Accounting for Stormwater (MDE)

• Monitoring Efforts

• Innovative/alternative BMP’s

• Maintenance Facility

• Expert Panel Protocols

• Protocol 1 (Prevented Sediment)

• Additional Monitoring Programs

Restoration Planning

Carroll County Maintenance Facility

• Double Pipe Creek Watershed

• Partnership

• Center for Watershed Protection

• Carroll County Government

• Standard vs. Enhanced sand filter

• MDE Alternative/Innovative Technology Review

• Construction scheduled Spring 2016

Carroll County Monitoring Programs

• NPDES Monitoring

• Retrofit Locations

• Double Pipe Creek

• Prettyboy Watershed

• South Branch Patapsco

• Bacteria Monitoring

• Liberty Watershed

• Prettyboy Watershed

• Storm Event Monitoring

• Carroll County Maintenance Facility

• MBSS Locations

• Maryland Biological Stream Survey

• Piney Run Reservoir

NPDES Monitoring • Liberty Watershed

• Airport Facility

• 563 Acre D.A., 140 Acre I.A. (25%)

• 28% Commercial/Industrial

Retrofit Monitoring

Double Pipe Creek

• Manchester Skate Park

• Sampled Bi-weekly

• TSS, OP, NO32, TP

• Spring MBSS

Land Use:

• Drainage Area: 99 Acres

• Impervious: 24 Acres (24%)

• Dominant Land Use: Residential (37%)

Retrofit Monitoring

Double Pipe Creek

• Carroll County Farm Museum

• Sampled Bi-weekly

• TSS, OP, NO32, TP

• Spring MBSS

Land Use:

• Drainage Area: 23 Acres

• Impervious: 4 Acres (17%)

• Dominant Land Use: Public Facilities (100%)

Retrofit Monitoring

Prettyboy Watershed

• Whispering Valley Phase IV

• Sampled Bi-weekly

• TSS, OP, NO32, TP

• Spring MBSS

• Cross Sectional Surveys

Land Use:

• Drainage Area: 95 Acres

• Impervious: 19 Acres (20%)

• Dominant Land Use: Residential (84%)

Retrofit Monitoring • South Branch Patapsco

• Shannon Run/Hawks Ridge

• Sampled Bi-weekly

• TSS, OP, NO32, TP

• Spring MBSS

Land Use:

• Drainage Area: 209 Acres

• Impervious: 42 Acres (20%)

• Dominant Land Use: Residential (63%)

Retrofit Monitoring • South Branch Patapsco

• Eldersburg Estates

• TSS, OP, NO32, TP

• Storm Event Monitoring

• Spring MBSS

• Cross Sectional Surveys

Land Use:

• Drainage Area: 30 Acres

• Impervious: 9 Acres (30%)

• Dominant Land Use: Residential (73%)

Bacteria Monitoring

Liberty Watershed

• Sampled Monthly

• 5 main sub-sheds

• Conjunction with Baltimore County

• 2015 program expansion

MBSS Locations

Double Pipe Creek (13 Sites)

• Retrofit monitoring (4)

• Union Mills (9)

South Branch Patapsco (15 Sites) • Retrofit Monitoring (3)

• Piney Run (7)

• Gillis Falls (5)

Liberty Reservoir (4 Sites) • Retrofit Monitoring (2)

• NPDES Monitoring (2)

Prettyboy Reservoir (5 Sites) • Retrofit Monitoring (1)

• Prettyboy Temperature/Trout Study (4)

• 2009/2010

• DNR Inland Fisheries

• Baltimore County DEPRM

Piney Run Reservoir • Reservoir Profile

• Bi-weekly

• April-November

• OP, TP, NO32, NH3, TKN, Chl-A, E-coli, Fe, Mg

• pH, Temp, D.O., Sp. Conductance, Turbidity

• Plankton and Zooplankton

• Sediment Core Analysis • Soluble Reactive Phosphorus

• Seasonal Analysis

• December 2014

• April and August 2015

Thank You!

Thank You!