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MassGIS Data: MassDEP Hydrography (1:25,000)

April 2017
MassDEP 1:25,000 Hydrologic data for Massachusetts with lakes, ponds, rivers, streams, and other water features
Download these layers (50 MB)
 - ESRI Shapefiles with ArcGIS LYR file
 - PALIS and SARIS lookup tables
Sample of MassDEP 25k Hydro

The MassDEP Hydrography layer is an enhanced version of the older U.S. Geological survey 1:25,000 Hydrography datalayer. It represents hydrographic (water-related) features, including surface water (lakes, ponds, and reservoirs), wetlands, bogs, flats, rivers, streams, and others (see below).

The layer is a hybrid of data based on USGS Digital Line Graphs (DLGs), scanned mylar separates obtained from the USGS, digitized hydrographic features from paper USGS 1:25,000 Topographic Quadrangle maps and data extracted from the MassDEP Wetlands datalayer. Areas within many surface water supply watersheds have been enhanced by using higher resolution streams and lakes from the MassDEP Wetlands datalayer, many areas have also been field verified. This layer is intended as an interim product that will be incorporated into the USGS’s National Hydrography Dataset (NHD) when funding and resources become available. If you are interested in providing data, funding, field work, or becoming part of an NHD working group, please contact Brian Brodeur of the MassDEP GIS Program by email at Brian.Brodeur@state.ma.us.

Available statewide, the hydrography (arc and polygon feature classes) is stored in ArcSDE as HYDRO25K_POLY and HYDRO25K_ARC.

Production

The DLG quadrangles were converted into Arc/INFO coverages and projected into the Massachusetts State Plane Coordinate System. The long list of items (MAJOR1, MINOR1, MAJOR2, MINOR2...) was then concatenated to a more simplified coding system. For each feature MINORn was truncated to three characters and linked to the other minor codes to create MINOR_TOT. For example, a submerged (612) wetland (111) is now coded MINOR_TOT = 612111. The original MAJORn, MINORn pairs are no longer part of the attribute tables.

Quadrangles covering Nantucket and Martha’s Vineyard were completely digitized from the 1:25,000 USGS quadrangles. Though not as thoroughly coded as the 1:25,000 DLGs, the linework is all at 1:25,000

The scanned quadrangles were automated in-house by scanning USGS mylar separates at 500 dots per inch. The resulting images were vectorized in GRID and then edited in ARCEDIT. Features missing from the blue line separate (i.e. dams or man-made shore) were digitized from the paper quadrangles.

Four quads along the Massachusetts-Connecticut border were obtained from the Connecticut DEP and projected to the Massachusetts State Plane Coordinate System. See the table below for details on the source of each quad.

An ongoing project by the MassDEP GIS Program to redelineate surface water supply watersheds using digital terrain models is adding additional streams within the newly delineated watersheds. These streams are from the MassDEP Wetlands datalayer with some additional on screen digitizing from the 2005 Color OrthoPhotos. Streams added from this process are generally coded as intermittent unless field verification proves otherwise. In 2007 the outlines of all reservoirs were replaced with those from the MassDEP Wetlands datalayer so either dataset can be used with the SWP Zones datalayer. In 2008 field verified streams for the Wachusett Reservoir watershed were provided by DCR West Boylston GIS staff and added.

Sample of Existing USGS 1:25000 Hydrography
Existing USGS 1:25000 Hydrography
Sample of Hydrologic Connections from DEP
Wetlands
Hydrologic Connections from DEP Wetlands
Sample of MassDEP Hydrography with Local
Resolution Streams
MassDEP Hydrography with Local Resolution Streams

Editing

All of the digitized quadrangles were checkplotted at 1:25,000. The 1:25,000 DLG quadrangles were randomly checkplotted. Each of the quadrangles was edgematched to its neighboring quads. The scanned hydrography was compared both to the source mylar and to the paper quadrangles to ensure completeness.

For the December 2003 update, the layer was extracted from the Quad library and dissolved into a single coverage, which was dissolved on all items after the SOURCE field was dropped. Most slivers, gaps, and other artifacts left over from the quad tiling scheme were removed. Some codes were also refined. Edits were preformed by MassGIS and Department of Environmental Protection (DEP) GIS Group staff.

The high resolution streams from the DEP Wetlands datalayer were field verified and edited mostly in the upper reaches of the watersheds where they crossed roads or if the natural flow wasn’t apparent.

Attributes

The layer contains both a polygon and arc feature class. The modified DLG coding scheme is extensive and includes a wide variety of features, including ponds, cranberry bogs, impoundments, wetlands, tidal flats, dams, streams, and aqueducts. Only data from the DLGs have been coded this completely. Data from other sources have been coded to include ponds and streams and in the case of data from the scanned quads, wetlands.

Pond and Lake Inventory System (PALIS) IDs are unique codes which were added to ponds and lakes by  DEP GIS in conjunction with the DEP Division of Watershed Management using identification codes developed by the Pond and Lakes Inventory System. For historical reasons, some wetland polygons have PALIS IDs. PALIS IDs were also given to impoundment areas along rivers and when necessary closure lines were added.

Since the data now comes from different sources, the attribute SOURCE was added to differentiate which program/entity provided the feature. An attribute for the approximate NHD resolution was added to aid in future input into NHD.

The fields in the polygon attribute table are:

MINOR_TOT Text (15) Concatenated feature code
POLY_CODE Number (10)
 
Generalized code based on MINOR_TOT simplified to these 9 codes:
 0 - LAND/ISLAND/DAM/AQUEDUCT
 1 - RESERVOIR (with PWSID)
 2 - WETLAND, MARSH, SWAMP, BOG
 3 - SUBMERGED WETLANDS
 4 - CRANBERRY BOG
 5 - SALT WETLANDS
 6 - LAKE, POND, WIDE RIVER, IMPOUNDMENT
 7 - TIDAL FLATS, SHOALS
 8 - BAY, OCEAN
 9 - INUNDATED AREA
PWSID Text (11) DEP public water supply identification number
PALIS_ID Number (6) A unique ID from the Ponds and Lakes Inventory System
SOURCE Text (12)
 
Program Source for the feature:
 USGS/MGIS – Original 1:25,000 Hydrography
 DEPGIS – Added from DEP Wetlands by DEP GIS staff
 DCRGIS – From DEP Wetlands and edits/verified by DCR staff
MINOR_NUM Number (15) Same as MINOR_TOT, as integer
RESOLUTION Text (12)
 
NHD corresponding resolution:
 HIGH - Nominally > 1:25,000
 LOCAL - < 1:25,000, nominally 1:12,000, some at 1:5,000
NAME Text (50) Feature name, from PALIS and USGS quads
The fields in the arc attribute table are:
MINOR_TOT Text (12) Concatenated feature code
ARC_CODE Number (10) Generalized code based on MINOR_TOT simplified to these codes:
   1 - SHORELINE
   2 - CLOSURE LINE
   3 - APPARENT WETLAND LIMIT
   4 - STREAM
   5 - INTERMITTENT STREAM
   6 - DITCH, CANAL
   7 - AQUEDUCT
   8 - DAM
   9 - INTERMITTENT/INDEFINITE SHORELINE
 10 - MAN-MADE SHORELINE
 11 - CHANNEL IN WATER
 99 - TRANSPORT ARC
   0 - UNKNOWN
PWSID Text (11) DEP public water supply identification number
SOURCE Text (12)
 
Program Source for the feature:
 USGS/MGIS – Original 1:25,000 Hydrography
 DEPGIS – Added from DEP Wetlands by DEP GIS staff
 DCRGIS – From DEP Wetlands and edits/verified by DCR staff
MINOR_NUM Double Same as MINOR_TOT, as integer
RESOLUTION Text (12) NHD corresponding resolution:
 HIGH - Nominally > 1:25,000
 LOCAL - < 1:25,000, nominally 1:12,000, some at 1:5,000
NAME Text (100) Feature name, from SARIS (where SARISCODE is populated) and USGS quads
LEN Double Feature length in meters
SARISNAME Text (30) Feature name from SARIS, where SARISCODE is populated
SARISCODE Text (10) SARIS code from MassDEP's Stream and River Inventory System table
The following table lists all the possible MINOR_TOT/MINOR_NUM codes for a POLYGON FEATURE. These codes have been extracted and concatenated from the USGS DLG major/minor pairs.
MINOR_TOT/NUM   DESCRIPTION
101   RESERVOIR
102   COVERED RESERVOIR
105   INUNDATION AREA
106   FISH HATCHERY/FARM
107   INDUST WATER IMPOUND
109   SEWAGE DISP POND
111   MARSH/WETLAND
114   CRANBERRY BOG
115   FLATS
116   BAY/ESTUARY/GULF
124   FILTRATION POND
400   RAPIDS
401   FALLS
402   GRAVEL PIT W/WATER
404   PUMPING STATION
406   DAM/WEIR
408   SPILLWAY
410   ROCK
412   STREAM
414   DITCH/CANAL
415   AQUEDUCT
416   FLUME
419   CHANNEL IN WATER
421   LAKE OR POND
422   CORAL REEF
999   LAND/ISLAND
7105   INUNDATION AREA
7111   MARSH/WETLAND
101619   RESERVOIR
101625   RESERVOIR
102111   COV RESERVOIR/MARSH
105007   INUNDATION AREA
105111   INUN AREA/MARSH
109421   SEWAGE POND/POND
109611   SEWAGE POND-ABAND
109619   SEWAGE POND
111007   MARSH/WETLAND
111105   MARSH/INUN AREA
111114   MARSH/CRANBERRY BOG
111608   MARSH-SALT
111612   MARSH-SUBMERGED
114007   CRANBERRY BOG
114111   CRANBERRY BOG/MARSH
115007   FLATS
115020   FLATS
115116   FLATS/BAY
115410   FLATS/ROCK
115412   FLATS/STREAM
115421   FLATS/POND
 
MINOR_TOT/NUM   DESCRIPTION
115422   FLATS/CORAL REEF
115616   FLATS-NAVIGABLE
406618   DAM-EARTHEN
410115   ROCKS/FLATS
412111   STREAM/MARSH
412115   STREAM FLATS
412612   STREAM-SUNKEN
415604   AQUEDUCT IN TUNNEL
419115   CHANNEL FLATS
419616   CHANNEL-NAVIGABLE
421007   LAKE OR POND
421101   POND/RESERVOIR
421111   POND WETLAND
421609   UNSURVEYED POND
421610   POND-INTERMITTENT
421612   POND-SUNKEN
421618   POND-EARTHEN
421619   LAKE OR POND
421625   LAKE OR POND
421628   LAKE OR POND
422115   CORAL REEF/FLATS
610402   INTERMIT PIT W/WATER
610421   INTERMITTENT POND
612111   SUBMERGED MARSH
619101   RESERVOIR
619412   STREAM
619421   LAKE OR POND
101111612   SUBMERGED RES MARSH
101619625   RESERVOIR
105007111   INUN AREA/MARSH
105111007   INUN AREA/MARSH
111007105   MARSH/INUN AREA
111007612   MARSH-SUBMERGED
111007625   MARSH/WETLAND
111105007   MARSH/INUN AREA
111114007   MARSH/CRANBERRY BOG
111612007   MARSH-SUBMERGED
111612421   POND MARSH-SUBMERGED
111612619   MARSH-SUBMERGED
111612625   MARSH-SUBMERGED
114007111   CRANBERRY BOG/MARSH
114111007   CRANBERRY BOG/MARSH
421111007   POND MARSH
421619625   LAKE OR POND
421625619   LAKE OR POND
619625415   AQUEDUCT
619625421   LAKE OR POND
101111612625   RES MARSH-SUBMERGED
The following table lists all the possible MINOR_NUM/MINOR_TOT codes for an ARC FEATURE. These codes have been extracted and concatenated from the USGS DLG major/minor pairs.
MINOR_TOT/NUM   DESCRIPTION
109   SEWAGE DISP/FILT BED
200   SHORELINE
201   MANMADE SHORELINE
202   CLOSURE LINE
203   INDEFINITE SHORELINE
204   APPARENT LIMIT
210   TRANSPORT ARC
300   SPRING
401   FALLS
405   WATER INTAKE
406   DAM/WEIR
407   CANAL LOCK
408   SPILLWAY
409   GATE
412   STREAM
414   DITCH/CANAL
415   AQUEDUCT
416   FLUME
419   CHANNEL IN WATER
422   CORAL REEF
605   RIGHT BANK
606   LEFT BANK
999   UNKNOWN OR NEAT LINE
7204   APPARENT LIMIT
9606   LEFT BANK
200009   SHORELINE
200201   MANMADE SHORELINE
200606   LEFT BANK/SHORE
200610   INTERMITTENT SHORE
201002   MANMADE SHORELINE
201009   MANMADE SHORELINE
201020   MANMADE SHORELINE
201605   MANMADE RIGHT BANK
201606   MANMADE LEFT BANK
202412   CLOSURE LINE/STREAM
203625   INDEFINITE SHORE
203627   INDEFINITE SHORE
204007   APPARENT LIMIT
204009   APPARENT LIMIT
406009   DAM/WEIR
406017   DAM/WEIR
406200   DAM/SHORE
 
MINOR_TOT/NUM   DESCRIPTION
406618   DAM/WEIR-EARTHEN
412007   STREAM
412009   STREAM
412020   STREAM
412202   STREAM CLOSURE LINE
412601   STREAM-UNDERGROUND
412604   STREAM-TUNNEL
412609   STREAM-UNSURVEYED
412610   STREAM-INTERMITTENT
414009   DITCH/CANAL
414017   DITCH/CANAL
414610   CANAL-INTERMITTENT
414611   CANAL-ABANDONED
415412   AQUEDUCT/STREAM
415601   AQUEDUCT-UNDERGROUND
415604   AQUEDUCT-TUNNEL
415605   AQUEDUCT RIGHT BANK
415611   AQUEDUCT-ABANDONED
415612   AQUEDUCT-SUBMERGED
601412   UNDERGROUND STREAM
605009   RIGHT BANK
605201   RIGHT BANK-MANMADE
606009   LEFT BANK
606201   LEFT BANK-MANMADE
610200   INTERMITTENT SHORE
610412   INTERMITTENT STREAM
610414   INTERMITTENT CANAL
610421   INTERMITTENT POND
200618406   SHORE/EARTHEN DAM
201009020   MANMADE SHORE
201020002   MANMADE SHORE
201020605   MANMADE RIGHT BANK
201605020   MANMADE RIGHT BANK
201606009   MANMADE LEFT BANK
201606020   MANMADE LEFT BANK
202412617   CLOS LINE/STR UNDERP
406009017   DAM/WEIR
406618017   DAM-EARTHEN
406618200   DAM-EARTHEN/SHORE
412610009   STREAM-INTERMITTENT
412610202   INT STREAM CLOSURE
412610617   INT STRM UNDERPASS

Source of 1:25,000 Hydrography from USGS

Source is for features coded as "USGS/MGIS" in the SOURCE field. Some of these features may have been modified by on-screen digitizing and/or enhanced with data from the MassDEP Wetlands (1:12,000) layer. See the SOURCE fields in the polygon and arc layers for specific sources. Also see the status map pdf
format of st_hd.pdf for the pre-MassDEP-enhanced hydrography data.

(USGS QUAD# - SOURCE)
Source Key:
  DLG = USGS Digital Line Graph
  SCN = Scanned USGS mylar
  DIG = Digitized from 1:25,000 USGS topographic maps
  CNR = Data from Connecticut modified by MassGIS

1 - DLG
2 - SCN
3 - SCN
4 - DLG
5 - DLG
6 - DLG
7 - DLG
8 - SCN
9 - SCN
10 - DLG
11 - SCN
12 - SCN
13 - SCN
14 - SCN
15 - SCN
16 - DLG
17 - SCN
18 - SCN
19 - SCN
20 - SCN
21 - SCN
22 - DLG
23 - SCN
24 - SCN
25 - SCN
26 - SCN
27 - SCN
28 - DLG
29 - SCN
30 - SCN
31 - SCN
32 - SCN
33 - SCN
34 - DLG
35 - SCN
36 - SCN
37 - SCN
38 - SCN
39 - SCN
40 - CNR
41 - SCN
42 - SCN
43 - SCN
44 - SCN
45 - SCN
46 - CNR
47 - DLG
48 - SCN
49 - SCN
50 - SCN
51 - SCN
52 - CNR
53 - DLG
54 - SCN
55 - SCN
56 - SCN
57 - SCN
58 - CNR
59 - DLG
60 - SCN
61 - SCN
62 - SCN
63 - SCN
64 - DLG
65 - DLG
66 - SCN
67 - SCN
68 - SCN
69 - SCN
70 - DLG
71 - DLG
72 - DLG
73 - DLG
74 - DLG
75 - DLG
76 - DLG
77 - DLG
78 - DLG
79 - DLG
80 - DLG
81 - DLG
82 - DLG
83 - DLG
84 - DLG
85 - DLG
86 - DLG
87 - DLG
88 - SCN
89 - DLG
90 - DLG
91 - DLG
92 - DLG
93 - DLG
94 - SCN
95 - DLG
96 - DLG
97 - SCN
98 - SCN
99 - SCN
100 - SCN
101 - SCN
102 - DLG
103 - DLG
104 - SCN
105 - SCN
106 - SCN
107 - SCN
108 - SCN
109 - DLG
110 - DLG
111 - DLG
112 - DLG
113 - DLG
114 - SCN
115 - SCN
116 - SCN
117 - SCN
118 - SCN
119 - DLG
120 - DLG
121 - DLG
121-S - DLG
122 - DLG
123 - DLG
124 - DLG
125 - SCN
126 - SCN
127 - SCN
128 - SCN
129 - SCN
130 - DLG
131 - DLG
132 - DLG
132-S - DLG
133 - DLG
134 - DLG
135 - DLG
136 - DLG
137 - DLG
138 - DLG
139 - DLG
140 - DLG
141 - SCN
142 - SCN
143 - SCN
144 - DLG
145 - DIG
146 - DLG
147 - DLG
148 - DLG
149 - DLG
150 - DLG
151 - DLG
152 - DLG
153 - SCN
154 - SCN
155 - SCN
156 - DLG
157 - DIG
158 - DIG
158-S - DIG
159-E - DLG
159-W - DLG
160 - DLG
161 - DLG
161-E - DLG
162 - DLG
163 - DLG
164 - DLG
165 - DLG
166 - DIG
167 - DIG
168-E - DLG
168-W - DLG
169 - DLG
170 - DLG
171 - DLG
172 - DLG
173 - DIG
173-E - DIG
173-S - DIG
173-SE - DIG
174 - DLG
174-N - DLG
175 - DLG
176 - DLG
176-S - DLG
177 - DIG
178 - DLG
179 - DLG
179-N - DLG
180 - DIG
180-S - DIG
181 - DLG
182 - DLG
182-E - DLG
183 - DLG
184 - DLG
184-N - DLG
185 - DLG
186 - DLG
186-W - DLG
187 - DIG
187-E - DIG
188 - DIG
188-E - DIG
188-S - DIG
188-SE - DIG
189 - DLG
Note that these hydrography layers do not have feature names (e.g., "Quabbin Reservoir" or "Connecticut River") as attributes. To label the features in these layers, use the annotation in the HYDRO subclass of the Geographic Place Names layer.

Maintenance

The MassDEP GIS Program maintains the MassDEP Hydrography layers.

The 2007 update includes new streams within the watersheds of active sources in Lynn, Peabody, Danvers, Middleton, Beverly, Manchester, and Ipswich.

The 2008 update includes new streams within the watersheds of active sources in Gloucester, Rockport, Ipswich, Newburyport, Amesbury, Haverhill, Andover, North Andover, Wakefield, Winchester, Woburn, Burlington, Lincoln, Concord, Leominster, Fitchburg, Worcester, Greenfield and the entire Wachusett Reservoir watershed. Please refer to the SWP Watersheds and SWP Zones datalayers for additional information on this project.

The 2009 update (released in March 2010) includes new streams within the watersheds of active and inactive sources in Ashburnham, Winchendon, Gardner, Fitchburg (North), Hudson, Marlborough, Westboro, Milford, Braintree, Hingham, Weymouth, Abington, Rockland, Brockton, Attleboro, Somerset, Fall River, Falmouth, Plymouth, Wareham, New Bedford, Taunton, and Cambridge. The code for closure lines was split into 2 different codes, where arc_code = 2 was assigned to features between tidal flats and bay/ocean, and arc_code = 12 was assigned to closure lines between different types of wetlands features. A minor_tot of 7204 was given to the tidal flat features. Some changes were made to the Quabbin Reservoir and tributaries, along with some covered reservoirs in Weston, Milton and Medford, at the request of the MWRA GIS Program. A general cleanup was also performed to address logical errors in the original dataset, like a stream inside an open water feature or a pond surrounded by a wetland line feature.

The March 2017 update added the NAME fields to both feature classes. MassGIS added these fields based on PALIS and SARIS codes. If features did not have these codes, annotation and USGS topographic quad imagery were used as sources. The LEN, SARISNAME and SARISCODE fields were also added at this time.

The April 2017 update includes MassDEP revisions to Surface Water Supply Protection (SWP) Watersheds in the MassDEP Western Region (except for the Cobble Mountain Complex and the Quabbin Reservoir) as well as the watersheds for Mill Pond (Burlington Water  Dept.), Old Oaken Bucket Pond (Scituate Water Division) and Silver Lake (Brockton Water Commission). Other MassDEP updates include linework for eleven missing stream segments, as provided by the Division of Fish and Game.  These segments and related edits nearby may be found in the Chicopee, Merrimack, Millers, Nashua, SuAsCo and South Coastal basins.

For other hydrographic features, also see the MassDEP Wetlands (1:12,000), Hydrography (1:100,000) and Major Ponds and Major Streams layers.


Last Updated 7/27/2017

Items

Contributor
Modified Date
2017-11-21
Release Date
2017-11-08
Identifier
75428c7a-624f-433d-9ec9-bf8678880a9b
Spatial / Geographical Coverage Location
Massachusetts
License
Author
MassGIS
Contact Name
MassGIS
Contact Email
Public Access Level
Public
Data Quality
False
Content Type
Language
English (United States)