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LEBA N O N
H EB R O N
CO LU M BIA
CO V EN T R Y
A N D O V E R
M A N S FIELD
W IN D H A M
BO LT O N
CO LCH E S T E RFR A N K LIN
M A R LBO R O U G H
AAA
B
A
A
A
A
AA
Amston
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
B
A
AA
A
B
B
B
A
AA
B
AA
A
A
A
A
A
A
A
B
A
AA
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
B
A
B
B
A
A
A
A
A
A
A
A
B
A
A
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
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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
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