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Eagleville Spring Hill

Willimantic

Atwoodville

Conantville

Liberty Hill

Village Hill

Mansfield Hollow

Mansfield Center

Post Hill

Mack Hill

Wolf Rock

Bush Hill

Kick Hill

Ball Hill

Sweet Hill

Gates Hill

Mason Hill

Utley Hill

Burnt Hill

Bourn Hill

Cooks Hill

Clarks Hill

Bunker Hill

Miller Hill

Goshen Hill

Burrows Hill

Frankel Hill

Chalker Hill

Babcock Hill

Commons Hill

Chestnut Hill

Monument Hill

Chestnut Hill

Hosmer Mountain

New Boston Hill

Obwebetuck Hill

Mansfield Hollow

Owunnegunset Hill

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Big Pond

Hop River

Hop River

Dam Brook

Ash Brook

Mono Pond

Echo Lake

Copy Pond

Post Brook

Mint Brook

Mill Brook

Judd Brook

Fawn Brook

Fawn Brook

Woods Pond

White Pond

Gilman Dam

Gasper Dam

Small Pond

Roman Pond

Makas Pond

Jones Pond

Eaton Pond

Celio Pond

Daly Swamp

Bear Swamp

Rufus Brook

Pease Brook

Macht Brook

Hoxie Brook

Baker Brook

Whites Pond

Warner Pond

Szegda Pond

Stiles Pond

Potash Pond

Perrys Pond

Palmer Pond

Lockes Pond

Little Pond

Laking Pond

Hubner Pond

Holman Pond

Graves Pond

Exeter Pond

Eatons Pond

Chapin Pond

Amston Lake

Cedar Swamp

Theims Brook

Senate Brook

Potash Brook

Olsons Brook

Jordan Brook

Jeremy River

Exeter Brook

Clarks BrookCheney Brook

Chapin Brook

Burnap Brook

Roulston Dam

Spencer Pond

Sawmill Pond

Pagachs Pond

Novista Pond

Johnson Pond

Hayward Pond

Glasser Pond

Farmers Pond

Andover Lake

Ahlbert Pond

Bishop Swamp

Pigeon Swamp

Merrow Swamp

Tenmile River

Sawmill Brook

Raymond Brook

Hemlock Brook

Collins Brook

Burgess Brook

Williams Pond

Robinson Pond

Pitchers Pond

Ostrager Pond

Holbrook Pond

Columbia Lake

Brewster Pond

Turnip Meadow

Thornton Brook

Straddle Brook

Hinckley Brook

Giffords Brook

Clubhouse Pond

Shetucket River

Massinger Brook

Blackmans Brook

Wangumbaug Lake

Butterfield Dam

Simon Hunt Pond

Girl Scout Pond

Brousseous Pond

Skungamaug River

Obwebetuck Brook

Cider Mill Brook

Brousseous Brook

Bear Swamp Brook

Paul Mathieu Dam

Spring Road Pond

Lower Woods Pond

Willimantic River

Willimantic River

Willimantic River

Willimantic River

Schoolhouse Brook

Hope Valley Brook

Dunham Pond Brook

Conantville Brook

Jones Street Pond

Intersection Pond

Bicentennial Pond

Spencer Pond Brook

Pigeon Swamp Brook

Natchaug River Dam

Ben Carpenter Pond

Susquetonscut Brook

Spinning Mill Brook

Mitterholtzer Brook

Columbia Lake Brook

Wellesway Club Pond

Perkins Corner Pond

Lane Road Pond No 3

Lane Road Pond No 1

Kick Hill Road Pond

Plum Paper Mill Pond

Mansfield Hollow Dam

Crane Hill Road Pond

Eagleville Pond Brook

Hope Valley Road Pond

West Branch Fawn Brook

Burrows Hill Road Pond

Upper Columbia Lake Brook

Hosmer Mountain Reservoir

Upper Colchester Road Pond

Lower Colchester Road Pond

Sterling Fibre Board Co Pond

Windham Hospital

Lebanon Middle

Rham High School

Hebron Elementary

Bolton High School

Gilead Hill School

Andover Elementary

Rham Middle School

Lebanon Elementary

Lyman Memorial High

Windham High School

Coventry High School

Southeast Elementary

Windham Middle School

Annie E Vinton School

Horace W Porter School

Mansfield Middle School

Eastern Regional Academy

Natchaug Elementary School

WB Sweeney Elementary School

Windham Technical High School

Captain Nathan Hale Middle School

George H Robertson Intermediate School

Eastern Connecticut State University

Quinebaug Valley Community College - Willimantic Campus

US Hwy 6

State H

wy 66

Route 6

Exeter Rd

State Hwy 87

Willimantic Rd

Jonathan Trumbull Hwy

State Hwy 32

East St

State Hwy 207

Main St

Route 87

State Hwy 85

Airline Trl

Storrs Rd

Trumbull Hwy

Church St

Wall St

Gilead St

Stafford Rd

Pine St

State Hwy 31

State Hwy 316

South St

State Hwy 289

State Hwy 195

Middleto

wn Rd

Baltic Rd

West St

Norwich Hartford Tpke

Browns Rd

Route 66

Goshen Hill Rd

Jones StTob

acco S

tTab

acco S

t

Levita Rd

Hebron Rd

Beaumont Hwy

Lebanon Rd

Pease

Rd

Oliver Rd

Bunker Hill Rd

Lake R

d

Paper Mill Rd

Trumball Hwy

Card

St

Clubho

use Rd

Kick H

ill Rd

Hunt Rd

Pucker St

Mack Rd

Gilea

d Rd

Ash StWaterman Rd

Leba

non A

ve

Cook Hill R

d

Mansfield City Rd

Boston Hill Rd

Boston Post Rd

Flanders Rd

Tuckie Rd

Cone Rd

Grayville Rd

Stearns Rd

Brandy St

State Hwy 1

6

New Boston Rd

Daly R

d

Leonard Bridge RdJordan Rd

Valley St

Hope Valley Rd

Long

Hill R

d

Skinner Ln

Bush

Hill Rd

Hop River Rd

Goshen

Hill Road

NO 1

Pleasant StErdoni Rd

Burnt Hill Rd

Shoddy Mill Rd

High St

Bogg Ln

Windham Rd

Club R

d

Old Willimantic Rd

Plains Rd

Old Slocum Rd

York

Rd

Town St

State Hwy 2

75

Puddin Ln

State

Hwy 8

9

Brick Top Rd

Warre

nville

Rd

North St

Silver St

Gates Rd

Burro

ws H

ill Rd

Johnson Rd

Buck

Rd

Hendee Rd

Chappell Rd

Jagger Ln

Wales Rd

Jackso

n St

Coventry Rd

Brigg

s Rd

Root Rd

Dunhamtown Rd

Mill Stream Rd

Bear Swamp Rd

Hebron Tpke

Hoxie Rd

Babcock Hill Rd

Village Hill Rd

Burnham Rd

State Hwy 14

Spring

Hill R

dMa

nsfie

ld Av

e

Ash R

d

Clarke Rd

Vlge Hill Rd

Swam

p Rd

Wellswood Rd

Nathan Hale Rd

Stonehouse Rd

Jurovaty Rd

Wheeling Rd

Martin Rd

Jurach Rd

Reidy Hill Rd

Bender Rd

Brigg

s Dr

Gaulin Rd

Szegda Rd

Porter Rd

Hillcrest Dr

Cards

Mill R

d

Macht Rd

Lover

s Ln

Clover Mill Rd

Doubleday R

d

Maple Rd

Fern Rd

Church Rd

McCall

Rd

Hennequin Rd

Wind

ham

Ave

Hopriver Rd

Highland Rd

Jones Rd

Crane

Hill R

d

Barker Rd

Walnu

t St

Bassetts Bridge Rd

Cross S

t

Chaffeeville Rd

Wells Wood Rd

Old Colc

hester

Rd

Pleasant Valley Rd

Hoadly Rd

Hall Rd

Old Eagleville Rd

Niles Rd

Whitn

ey R

d

State Hwy 2

Parke

r Bridg

e Rd

Brewster St

West Town St

Davis Rd

Oak S

t

Flanders River Rd

Kinney Rd

Moun

tain S

t

Jerry Daniels Rd

Seagraves Rd

Gardiner Rd

Love Ln

Olinick R

d

Wrights Mill Rd

Skinner Hill Rd

Townsend Rd

Pond Rd Smith Rd

Bascom Rd

Judd R

d

Olenick

Rd

Deepwood Dr

Kingsley Rd

Dunigham Town Rd

Frontage Rd

Woods Rd

Lakeside Dr

Kings

Rd

Slocum Rd

Reed

Rd

Crouch Rd

Hutchinson Rd

1st St

South RdBasket Shop Rd

Birch

St

Old Hartford Rd

Laurel

Ln

Horiska Rd

Summit St

Ice House Rd

Tenmile Riv

Meeting House Rd

Talco

tt Hill R

d

Madley Rd

Valins

ky Rd

Cones Rd

Cona

ntville

Rd

Street Ext

School Rd

Roanoak Ave

Roanoke Ave

Lake

St

Hoxie Road NO 1

Loveland Rd

Cemetery Rd

Stone House Rd

Higgins Hwy

Chitte

nden

Rd

Cann

on D

r

Lakewood Dr

Scarboro Rd

Szedga

Road NO 1

Watrous Rd

Country Ln

Eline Ave

Depot Rd

Hardy Rd

Cherry Valley Rd

Oakwood Ln

Kellogg Rd

Fores

t Rd

Edgarton RdEdgerton Rd

Columbia Ave

Sunn

y Slop

es

Old Coventry Rd

Lewiston Ave

Old R

oute

89

Old Ando

ver Rd

Woodland Rd

Northam Rd

Stonegate Dr

Attaw

anho

od Tr

l

Larrow Dr

Fowler Rd

River Rd

Times

Farm

Rd

Majorie Cir

Kaya Ln

Chesbro Bridge Rd

Avery Shrs

Heritage Rd

Ripley H

ill Rd

Sunny

slopes

Rd

Schalk Rd

Merritt Valley Rd

Maple D

r

London Rd

Case Rd

Windrush Ln

Cooper Ln

Webs

ter Ln

Fox Trl

Norwich Lebanon Rd

Old Oak Trl

Burnap

Brook R

d

Woodbridge Rd

Shore

Dr

Whitney St

2nd St

Marjo

rie C

ir

Jan Dr

Black

man R

d

Senate Brook Dr

Wadsworth Ln

Goshen Hill Rd Ext

Whites Hill Rd

Bailey Rd

Thornbush Rd

Lori Rd

Candide Ln

Reynolds Dr

Lake Ridge Dr

Brendi Trl

Latham

Hill Rd

Bishop

Ln

Riverside Dr

Giffo

rd Av

e

Stanley Dr

Foster Dr

Scenic Dr

Bush Rock Rd

Ridgewood Trl

Park Rd

Fox Rdg

Brown

ing Rd

Machine Shop Hill Rd

Echo Rd

Deer Run Dr

Amston Rd

Juniper

Dr

Seab

ury Rd

Ivan H

ill St

Chapman St

Old Bush Hill Rd

Indian Field Rd

Lake Shore Dr

Congress Dr

Jennife

r Dr

Grandview Dr

Edgemere Rd

Lions Way

Hope St

Dilaj Dr

Spafford Dr

Hillcrest Hts

Sawmill Brook Ln

Ridge Rd

Milk

St

Ives St

Rafferty Rd

Colonial Dr

Shari

ngton

Dr

Willimantic Tpke

Hemlock Point Dr

Conantvi

lle Road

NO 1

Hickory Dr

Lakeview Dr

Spring St

Old Hwy

Slocum Road NO 2

Heron Hill Rd

Abbe St

Valerie Dr

Ireland Dr

Chow

anec

Rd

James Ln

Synagogue Rd

Mansfiel

d Hollo

w Rd

Dodd Rd

Bass

Rd

Horn Rd

Lake Williams Dr

Wormwood Hill Rd

Southridge Dr

Holbrook Ave

Zola Rd

Franci

s Dr

Ridge Dr

Russmar Trl

Stream

Linda Ln

Bausola Rd

Carol Dr

Unca

s Dr

Elm St

Memorial Dr

Francis St

Chestnut Hill Rd

Holbr

ook P

ond R

d

Old Farms Rd

Gavin

Dr

Old Amston Rd

Birch Bend Rd

Paden Rd

Echo Dr

Scalise Dr

Carver Ln

Circle Dr

Fox Run

Springdale Rd

Highlan

d Dr

Strevor Dr

Woodlawn Dr

Gates Farm Rd

Atwoodville Rd

Aspen Pl

Stanley Rd

Santa Anna Rd

Chatham Dr

Alice St

Bog Lane Rd

Birch Dr

Gem Dr

Steel Crossing

Rd

Bellvue Dr

Beech

Mountain

Rd

Sean Cir

Robinson Rd

Ross Ave

Hinkel Ave

Kingsley Dr

James Dr

Beau

det T

erCove Rd

Dogwood Dr

Mark Dr

Lamotte Dr

Haley Ln

Alexis Dr

Spring Rd

Smith

Farm

Rd

Fairview St

Lodi Dr

Leslie Ln

Settlement Rd

Serwan Ave

Standish Rd

Alice Ln

Shadblow Ln

Pine Ridge Dr

Randazzo R

d

Rabbit Trl

Oxbow Dr

Brown Rd

Hilltop Dr

Rec Park

Cheney Ln

Thom

pson

Hill R

d

Old Daniels Ln

Long Dr

Pemberton Rd

Miller R

d

Skinne

r Rd

Crystal Rd

Stone Ridge Ln

Gregory Rd

Mountain Rd

Jacobs Hill Rd

Old Plains Rd

White

Oak

Rd

Willow Dr

Fieldstone Dr

Jeffrey Rd

Cindy

Dr

Sanitarium Rd

Carriage Dr

Westgate Rd

Riverview Rd

Wickford Rd

Mai Rd

Prentice Hill Rd

Stonebr

idge R

d

Keating

St

Brennan Rd

Lawren

ce Dr

Old Hebron Rd

Old Mansfield Rd

Ridgewood Rd

Rita Dr

Ches

terfie

ld Rd

West Ave

Cider Mill Rd

Sentinal Woods

Gordon Ave

Wildwood Dr

Indus

trial R

d

Kristen Ln

Castlerock Ln

Whitte

more

St

Lempster CtBernie

s Way

Philip Lauter Park

Is Beach Rd

Jude LnUpton Dr

Trapella Rd

Hayden St

Rockledge Dr

Hawks Lndg

Beech Rd

Hewit

t St

Park S

t

Goshen Hts

Gina Ln

Jona

than L

n

Pond Way

Willow Glen Dr

Stonewall Ln

Cedar Ridge Dr

Evelyn Dr

Peru St

Max F

elix D

rCo

mmerc

e Dr

Kolar D

r

Simons Rd

Babc

ock H

ill Roa

d Ext

Hinkel Mae Dr

Collins Rd

Airport Rd

Coates Farm Rd

Hebron Ldg

Tyler Sq

Pigeon

Swam

p Rd

Hills L

n

Woodward Rd

Pepperbush Dr

Beve

rly D

r

Scho

ol St

Natchau

g St

Krause Rd

Blackl

edge D

r

Centre St

Brindlewood Path

Sycamore Trl

Cherry Ln

Sadlo

n Rd

Crescent St

Antrim Rd

Bradbu

ry Ln

Baker Hill Rd

Pickford Dr

Beaver Trl

Columbia Lndg

Ryan

Rd

Pine Woods Ln

Cantor Dr

Lakeview Hts

Type Rd

Carolyn Ln

Lydia L

n

Yeom

ans R

d

Oak Farms Rd

Bristol St

Bayberry Ln

Brick

Top L

n

Sheffield Dr

Lower Woodland Ter

Carriage Ln

Oak Trl

Independence Dr

Sudburt Rd

Turner Rd

Woodland Dr

Center St

Sleepy Hollow Rd

Hillsid

e Dr

Hinckl

ey Rd

Laurel Trl

Majus

Dr

Oak Dr

Strickland Rd

Prospect St

Clark St

Gristm

ill Rd

Rose Ln

Deer Rock Dr

Lakeshore DrMorin Ave

Haven Ave

Forest View Ln

Mill Landing Rd

Bartlett Rd

Nathan Hale Dr

Allen Rd

Storey Ave

Woods L

nMiller Farm Rd

Saw Mill Way

Kathy Cir

Catherine St

Emerald Ave

Bisse

ll Ridg

e Rd

Midland Dr

Griswold Ln

Hilltop Ln

Richardson Dr

Cameo Dr

Margare

t Dr

Daria Dr

Beacon Hill Dr

Ash T

rlSunr

ise Dr

Lakeview Park

Island St

Stonecroft Ln

Quail Run Rd

Wood Fern Way

Stagecoach Rd

Wesley Cir

Selde

n St

Doctor Manning Dr

Pendleton Dr

Newberry Rd

Berry Ave

Longview Dr

Louise Rd

Tanglewood Ln

Old Meet

ing Hous

e Rd

Lindholms Cor

John Paul Ln

Anna Maria Ln

Chesterbrook Ln

Jurov

aty Ln

Manion Ln

Liberty Dr

Lafayette St

Farm Ln

Mark Anthony Rd

Tunxis Ln

Hemlock Ln

Hayfield Ln

Old Route 2

Villag

e Ln

Gilead Ldg

Samuel Ln

Monument Hill Rd

Buckingham Rd

Oberg Rd

Beach Rd

Hearths

tone D

r

Blake Ln

Hickory Ct

Park Ave

Ayers Rd

Leba

non S

q

Scanlon Ter

Crest Rd

Judd Brook Ln

Kingswood

Richmond Ln

Canal St

Brighton Ln

Howard Dr

Jessie Ln

John

ston A

ve

Barbers

Way

Diane D

r

Lester Rd

Pine Ridge Rd

US Hw

y 6

Main St

Reed Rd

River Rd

Hebron Ldg

Willimantic R

d

Sharin

gton D

r

Mansfield City Rd

South St

Hebron Rd

Riverside Dr

Hebron Rd

High St

School Rd

Wind

ham

Rd

State Hwy 2

Babcock Hill Rd

Laurel Ln

Cross St

South

St

Hillcrest Hts

Liberty Dr

Park Rd

Fieldstone Dr

Pigeo

n Swa

mp Rd

Circle Dr

Main St

Lebanon Rd

Ridge Rd Plains

Rd

Park Rd

School Rd

Hebron Rd

Wall St

Carver Ln

Daly Rd

Lake Rd

South Rd

Robinson Rd

Shore Dr

Country Ln

Cider Mill Rd

Kinney Rd

Babcock Hill Rd

Main St

Old C

olche

ster R

d

North

St

Highland Rd

Coventry Rd

Laurel Ln

Hebron Rd

Frontage Rd

£¤6

£¤6

SV66

SV316

SV85

SV32

SV195

SV87

SV289

SV16

SV207

SV31

SV2

SV14

SV89

SV275

SV2

WindhamAirport

MAP LOCATION

ColumbiaColumbia

W ATER Q UALITY CLAS S IFICATIONSCOLUMBIA, CT

SCALE 1:24,000 (1 inch = 2000 feet) when map is printed at original size

1 0 10.5 Miles

1 0 10.5 Kilometers

1000 0 1000 2000 3000 4000 5000 6000 7000 Feet

ADOPTED DATES

W ater Q uality S tandardsFebruary 25, 2011

Thames R iver, Pawcatuck R iver and Southeast CoastalBasins: December 1986

Connecticut R iver and South Central Coastal Basins:February 1993

Housatonic R iver, Hudson R iver and Southw est CoastalBasins: March 1999

S TATE OF CONNECTICUTDEPAR TMENT OFENER GY & ENV IR ONMENTAL PR OTECTION79 Elm S treetHartford, CT 06106-5127

State Plane Coordinate System of 1983, Zone 3526Lambert Conformal Conic Projection

North American Datum of 1983

MAJOR BASINS1 Paw catuck2 Southeast Coast3 Thames4 Connecticut5 South Central Coast6 Housatonic7 Southw est Coast8 Hudson

£

S UR FACE W ATER Q UALITY CLAS S ES

Final Aquifer Protection Area (Level A)Major Basin Boundary

GR OUND W ATER Q UALITY CLAS SES

NOTES:S urface W ater Classifications beginning w ith S refer to Coastal and Marine S urface W ater.B* is a subset of Class B where no direct w astew ater discharges are allow ed other than thoseconsistent with Class AA, A and SA surface w aters.

GA (white background)GAA, GAAsGA, GAA may not meet current standardsGBGC

Area of Contribution to Public Supply Well

AAAB, B*SASB

AAAB, B*SASB

EX PLANATIONW ATER Q UALITY CLAS S IFICATIONS (W Q C) MAPS are oneof the elements of the W ater Q uality S tandards (W Q S ) for theS tate of Connecticut. The W Q S are a part of Connecticut's cleanw ater program and are essential for protecting and improving waterquality. The W Q S follow the principles of Connecticut's CleanW ater Act which is in Chapter 446K of the Connecticut GeneralS tatutes. The W Q S provide policy guidance in many areas, forexample decisions on acceptable discharges to water resources,siting of landfills, remediation or prioritization of municipalsew erage system projects. The first two elements of the W Q S arethe S tandards, which set an overall policy for management of waterquality, and the Criteria, which are descriptive and numericalstandards that describe the allowable parameters and goals forvarious water quality classifications. A discussion of these twoelements is found in the W ater Q uality S tandards documentavailable on the CT DEEP website. The third element is theClassifications and the W ater Q uality Classification Maps whichshow the Classification assigned to each surface and groundw aterresource throughout the S tate. The W Q S are adopted using a publicparticipation process. The W Q C maps are also adopted using apublic participation process but go through hearings separatelyfrom the S tandards and Criteria hearings. R evision and adoption ofthe W Q C data occurs in accordance with the public participationprocedures contained in S ection 22a-426 of the ConnecticutGeneral S tatutes. Ground W Q C is subject to Connecticutregulation and changes must be review ed and adopted. All changesto the S urface W Q C require an adoption process which is subjectto federal review and approval in addition to CT regulation. Theadoption dates for the W Q C by major drainage basin are:Housatonic R iver, Hudson R iver and Southw est Coastal Basins -March 1999; Connecticut R iver and South Central Coastal Basins -February 1993; Thames R iver, Pawcatuck R iver and SoutheastCoastal Basins - December 1986. S urface W ater Classifications donot change after the adoption date until the next major revision.Ground W ater Classifications may change after the adoption dateunder specific circumstances. The map may have more than oneW Q C adoption date because a town may be in more than onemajor drainage basin.SUR FACE W ATER S in Connecticut are divided into freshw aterclassified as AA, A, B or B* and saline waters classified as SA orSB. Class AA designated uses are existing or proposed drink ingw ater supplies; habitat for fish and other aquatic life and wildlife;recreation; and water supply for industry and agriculture. Class Adesignated uses are habitat for fish and other aquatic life andw ildlife; potential drink ing water supplies; recreation; navigation;and water supply for industry and agriculture. Class SA designateduses are habitat for marine fish, other aquatic life and wildlife;shellfish harvesting for direct human consumption; recreation;industrial water supply; and navigation. Class B designated usesare habitat for fish and aquatic life and wildlife; recreation;navigation; and industrial and agricultural water supply. Class B*,applicable to Candlewood Lak e, is a subset of Class B and isidentical in all ways to the designated uses, criteria and standardsfor Class B waters except for the restriction on direct discharges.Class SB designated uses are habitat for marine fish and aquaticlife and wildlife; commercial shellfish harvesting; recreation;industrial water supply; and navigation.

S urface waters which are not specifically classified shall beconsidered as Class A or Class AA. S urface waters in GA groundw ater areas are assumed Class A or Class SA unless otherwiseindicated. S urface waters in GAA ground water areas are assumedClass AA unless otherwise indicated.On the W Q C map a surface water quality goal of A is representedby blue colored water bodies. S urface water quality goal of AA isrepresented by purple colored water bodies. S urface water qualitygoal of B is represented by gold colored water bodies.GR OUND W ATER S in Connecticut are classified as GAA, GA,GB and GC. Class GAA designated uses are existing or potentialpublic supply of w ater suitable for drink ing without treatment andbaseflow for hydraulically-connected surface water bodies. TheClass GAAs is a subclass of GAA for ground water that is tributaryto a public water supply reservoir. The area of contribution to apublic water supply well is represented by a 500-foot radius aroundthe well and is assumed to be Class GAA unless otherwiseclassified. Class GA designated uses are existing private andpotential public or private supplies of water suitable for drink ingw ithout treatment and baseflow for hydraulically-connectedsurface water bodies. All ground waters not specifically classifiedare considered as Class GA. Class GB designated uses areindustrial process water and cooling waters and baseflow forhydraulically-connected water bodies and is presumed not suitablefor human consumption without treatment. Class GC designateduses are assimilation of discharges authorized by theCommissioner pursuant to S ection 22a-430 of the General S tatutes.On the W Q C map GA is represented by white colored land areas.Class GAA and class GAAs are represented by blue colored landareas. The area of contribution to a public water supply well isshown by a blue cross-hatch overprint. A notation of GAAfollowed by a state abbreviation indicates a watershed thatcontributes to the public water supply for a state other thanConnecticut. Class GA or Class GAA areas that currently may notbe meeting the GA or GAA standards are represented on the W Q Cmaps by tan colored land areas. Class GB is represented by greencolored land areas. Class GC is represented by magenta coloredland areas.FINAL AQ UIFER PR OTECTION AR EAS (Level A) are includedon the W Q C maps for informational purposes. These areas areanticipated to be reclassified GAA during the next major basinupdates, subject to public participation. The Aquifer ProtectionProgram helps protect Connecticut’s public drink ing waterresources by delineating aquifer protection areas (also calledw ellhead protection areas) for public supply wells and establishingland use regulations within these areas. These areas represent theland area contributing ground water to active public water supplywells or well fields that serve more than 1000 people and are set insand and gravel aquifers (stratified drift deposits).

DATA SOUR CESW ATER Q UALITY CLAS S IFICATIONS DATA – W ater qualityclassifications shown on this map are based on information fromthe following digital spatial datasets that are typically showntogether – Ground W ater Q uality Classifications Poly, S urfaceW ater Q uality Classifications Line, and S urface W ater Q ualityClassifications Poly. The map legend above reflects the content ofthese three data sources. These W Q C data were initially compiledon 1:24,000-scale 7.5 minute USGS topographic quadrangle mapsand later digitized at 1:24,000 scale. For example, the S urfaceW ater Q uality Classifications Line and S urface W ater Q ualityClassifications Poly digital data assigns surface water qualityclassifications to water bodies such as rivers, streams, reservoirs,lak es, ponds and coves found in 1:24,000-scale hydrography dataavailable from CT DEEP. The hydrography may not include all thew aterbodies in Connecticut. The Ground W ater Q ualityClassifications Poly data assigns ground water qualityclassifications, at 1:24,000 scale, to the remaining land areas inConnecticut.AQ UIFER PR OTECTION AR EA DATA – Aquifer ProtectionAreas shown on this map are from the Aquifer Protection Areadigital dataset which contains polygon data intended to be used at1:24,000 scale. The dataset contains regulated areas classified asLevel A Aquifer Protection Area (Final) and Level B AquiferProtection Area (Preliminary). The Level B areas are not shown onthe W Q C maps. The data was collected from 1991 to the presentand is actively updated as Final area mapping replaces earlierPreliminary areas. The Aquifer Protection Areas are delineated by

the individual water companies owning the well fields andsubmitted to the CT DEEP for approval. Preliminary mappingprovides a general estimate of the area contributing ground waterto the well field. Final mapping is based on extensive, site-specific,detailed modeling of the ground water flow system. CT DEEP mayadjust Final area boundaries to be consistent with 1:24,000 scaletopography and base map data where appropriate during theapproval process.MAJOR DR AINAGE BASIN DATA – Major drainage basinsshown on this map are from Major Basin Line data developed byCT DEEP and intended to be used at 1:24,000 scale.BASE MAP DATA - Based on data originally from 1:24,000-scaleUSGS 7.5 minute topographic quadrangle maps published betw een1969 and 1992. It includes political boundaries, railroads, airports,hydrography, geographic names and geographic places. S treets andstreet names are from Tele Atlas® copyrighted data. Base mapinformation is neither current nor complete.R ELATED INFOR MATIONThis map is intended to be printed at its original dimensions inorder to maintain the 1:24,000 scale (1 inch = 2000 feet).W ATER Q UALITY S TANDAR DS - Go to the CT DEEP websitefor a summary and the full text of the “W ater Q uality S tandards”and for other information on water quality.AQ UIFER PR OTECTION AR EAS - Go to the CT DEEP websitefor more information.

Map created by CT DEEPOctober 2018Map is not colorfast

Protect from light and moisture