Massachusetts has 14 lakes and reservoirs tracked here — 10 with a current elevation reading, from USGS Water Services and USACE CWMS Data. Sort the table by level, storage, %-full, or trend, then open any lake for its full elevation-with-datum, trend sparkline, storage, and source-and-vintage stamp. Figures are provisional readings for reference — not for navigation or safety decisions.
10 report a current pool-elevation reading; the rest report storage only.
Every lake tracked in Massachusetts. Click a column heading to sort, or filter by name. Elevation lakes are listed before storage-only lakes; a missing figure always shows "not reported," never an estimate.
| Datum | Trend | ||||
|---|---|---|---|---|---|
| Ashumet Pond, Falmouth | 43.40 | NGVD29 | — | — | ↓Falling |
| Barre Falls Dam | 771.27 | NGVD29 | 27 | — | ↓Falling |
| Birch Hill Dam | 816.21 | NGVD29 | 121 | — | ↓Falling |
| Buffumville Dam | 492.43 | NGVD29 | — | — | ↓Falling |
| Conant Brook Dam | 693.82 | NGVD29 | 2 | — | ↓Falling |
| East Brimfield Dam | 632.11 | NGVD29 | 43 | — | ↓Falling |
| Hodges Village Dam | 468.03 | NGVD29 | 12 | — | ↓Falling |
| Long Pond | 52.50 | NAVD88 | — | — | ↓Falling |
| Pumphouse on Assawompset Pond | 51.23 | NAVD88 | — | — | ↓Falling |
| Westville Dam | 525.65 | NGVD29 | 17 | — | ↓Falling |
| Knightville Dam | — | — | 13 | — | — |
| Littleville Dam | — | — | 195 | — | — |
| Tully Dam | — | — | 975 | — | — |
| West Hill Dam | — | — | 34 | — | — |
Data: USGS Water Services (waterservices.usgs.gov) and USACE CWMS Data (cwms-data.usace.army.mil), retrieved 2026-08-31. Both public domain (a work of the U.S. Government, 17 U.S.C. §105).
Each lake tracked in Massachusetts has its full record here — current reading, recent trend, and the dam behind it where the National Inventory of Dams has one. Use the table above to jump to a lake, or read straight through.
Datum NGVD29
−0.4 ft over the trend window
Source: USGS site 413758070320501, retrieved Aug 31, 2026, 8:24 AM (UTC+00:00). Official page for Ashumet Pond, Falmouth →
Datum NGVD29
−0.2 ft over the trend window
Barre Falls Dam is held back by Barre Falls Dam , a rockfill embankment — quarried rock placed in compacted layers around a sealing core , standing 69 ft high and running 885 ft along its crest , built across WARE RIVER in Worcester County , near BARRE . It was completed in 1958 , and is owned by USACE - New England District , to a design credited to CENAE. Its recorded primary purpose is flood risk reduction — the pool is drawn down between storms so there is empty space waiting for the next flood, which is why this level can fall in dry weather and climb sharply after rain. Its spillway is ungated: once the pool reaches the crest, water leaves on its own and the operator cannot hold it back. NID classes it high hazard potential. That describes what a failure would cost downstream — loss of life would be expected — and says nothing about how likely a failure is, or what condition the dam is in. National Inventory of Dams record MA00962 — U.S. Army Corps of Engineers, public domain.
Source: USACE NAE/BFD, retrieved Aug 31, 2026, 8:24 AM (UTC+00:00). Official page for Barre Falls Dam →
Datum NGVD29
−0.5 ft over the trend window
Birch Hill Dam is held back by Birch Hill Dam , an earthfill embankment, holding the pool back by sheer mass and an impervious core rather than by the strength of concrete , standing 49 ft high and running 1,400 ft along its crest , built across MILLERS RIVER in Worcester County , near ATHOL . It was completed in 1942 , and is owned by USACE - New England District , to a design credited to USACE. Its recorded primary purpose is flood risk reduction — the pool is drawn down between storms so there is empty space waiting for the next flood, which is why this level can fall in dry weather and climb sharply after rain. Its spillway is ungated: once the pool reaches the crest, water leaves on its own and the operator cannot hold it back. NID classes it high hazard potential. That describes what a failure would cost downstream — loss of life would be expected — and says nothing about how likely a failure is, or what condition the dam is in. National Inventory of Dams record MA00963 — U.S. Army Corps of Engineers, public domain.
Source: USACE NAE/BHD, retrieved Aug 31, 2026, 8:24 AM (UTC+00:00). Official page for Birch Hill Dam →
Datum NGVD29
−0.1 ft over the trend window
Buffumville Dam is held back by Buffumville Dam , a concrete gravity structure, resisting the reservoir by its own weight alone , standing 66 ft high and running 3,255 ft along its crest , built across LITTLE RIVER in Worcester County , near WEBSTER . It was completed in 1958 , and is owned by USACE - New England District , to a design credited to CENAE. Its recorded primary purpose is flood risk reduction — the pool is drawn down between storms so there is empty space waiting for the next flood, which is why this level can fall in dry weather and climb sharply after rain. Its spillway is ungated: once the pool reaches the crest, water leaves on its own and the operator cannot hold it back. NID classes it high hazard potential. That describes what a failure would cost downstream — loss of life would be expected — and says nothing about how likely a failure is, or what condition the dam is in. National Inventory of Dams record MA00964 — U.S. Army Corps of Engineers, public domain.
Source: USACE NAE/BVD, retrieved Aug 31, 2026, 8:24 AM (UTC+00:00). Official page for Buffumville Dam →
Datum NGVD29
−0.4 ft over the trend window
Conant Brook Dam is held back by Conant Brook Dam , a concrete gravity structure, resisting the reservoir by its own weight alone , standing 85 ft high and running 900 ft along its crest , built across CONANT BROOK in Hampden County , near MONSON . It was completed in 1966 , and is owned by USACE - New England District , to a design credited to CENAE. Its recorded primary purpose is flood risk reduction — the pool is drawn down between storms so there is empty space waiting for the next flood, which is why this level can fall in dry weather and climb sharply after rain. Its spillway is ungated: once the pool reaches the crest, water leaves on its own and the operator cannot hold it back. NID classes it high hazard potential. That describes what a failure would cost downstream — loss of life would be expected — and says nothing about how likely a failure is, or what condition the dam is in. National Inventory of Dams record MA00965 — U.S. Army Corps of Engineers, public domain.
Source: USACE NAE/CBD, retrieved Aug 31, 2026, 8:24 AM (UTC+00:00). Official page for Conant Brook Dam →
Datum NGVD29
−0.1 ft over the trend window
East Brimfield Dam is held back by East Brimfield Dam , a rockfill embankment — quarried rock placed in compacted layers around a sealing core , standing 53 ft high and running 520 ft along its crest , built across QUINEBAUG RIVER in Worcester County , near STURBRIDGE . It was completed in 1960 , and is owned by USACE - New England District , to a design credited to CENAE. Its recorded primary purpose is flood risk reduction — the pool is drawn down between storms so there is empty space waiting for the next flood, which is why this level can fall in dry weather and climb sharply after rain. Its spillway is ungated: once the pool reaches the crest, water leaves on its own and the operator cannot hold it back. NID classes it high hazard potential. That describes what a failure would cost downstream — loss of life would be expected — and says nothing about how likely a failure is, or what condition the dam is in. National Inventory of Dams record MA00966 — U.S. Army Corps of Engineers, public domain.
Source: USACE NAE/EBD, retrieved Aug 31, 2026, 8:24 AM (UTC+00:00). Official page for East Brimfield Dam →
Datum NGVD29
−0.2 ft over the trend window
Hodges Village Dam is held back by Hodges Village Dam , a rockfill embankment — quarried rock placed in compacted layers around a sealing core , standing 54 ft high and running 200 ft along its crest , built across FRENCH RIVER in Worcester County , near WEBSTER . It was completed in 1959 , and is owned by USACE - New England District , to a design credited to CENAE. Its recorded primary purpose is flood risk reduction — the pool is drawn down between storms so there is empty space waiting for the next flood, which is why this level can fall in dry weather and climb sharply after rain. Its spillway is ungated: once the pool reaches the crest, water leaves on its own and the operator cannot hold it back. NID classes it high hazard potential. That describes what a failure would cost downstream — loss of life would be expected — and says nothing about how likely a failure is, or what condition the dam is in. National Inventory of Dams record MA00967 — U.S. Army Corps of Engineers, public domain.
Source: USACE NAE/HVD, retrieved Aug 31, 2026, 8:24 AM (UTC+00:00). Official page for Hodges Village Dam →
Datum NAVD88
−0.2 ft over the trend window
Source: USGS site 414945070560301, retrieved Aug 31, 2026, 8:24 AM (UTC+00:00). Official page for Long Pond →
Datum NAVD88
−0.3 ft over the trend window
Source: USGS site 415026070563603, retrieved Aug 31, 2026, 8:24 AM (UTC+00:00). Official page for Pumphouse on Assawompset Pond →
Datum NGVD29
−0.2 ft over the trend window
Westville Dam is held back by Westville Dam , a rockfill embankment — quarried rock placed in compacted layers around a sealing core , standing 72 ft high and running 560 ft along its crest , built across QUINEBAUG RIVER in Worcester County , near SOUTHBRIDGE . It was completed in 1962 , and is owned by USACE - New England District , to a design credited to CENAE. Its recorded primary purpose is flood risk reduction — the pool is drawn down between storms so there is empty space waiting for the next flood, which is why this level can fall in dry weather and climb sharply after rain. Its spillway is ungated: once the pool reaches the crest, water leaves on its own and the operator cannot hold it back. NID classes it high hazard potential. That describes what a failure would cost downstream — loss of life would be expected — and says nothing about how likely a failure is, or what condition the dam is in. National Inventory of Dams record MA00972 — U.S. Army Corps of Engineers, public domain.
Source: USACE NAE/WVD, retrieved Aug 31, 2026, 8:24 AM (UTC+00:00). Official page for Westville Dam →
Knightville Dam is held back by Knightville Dam , a rockfill embankment — quarried rock placed in compacted layers around a sealing core , standing 150 ft high and running 1,200 ft along its crest , built across WESTFIELD RIVER in Hampshire County , near HUNTINGTON . It was completed in 1941 , and is owned by USACE - New England District , to a design credited to CENAE. Its recorded primary purpose is flood risk reduction — the pool is drawn down between storms so there is empty space waiting for the next flood, which is why this level can fall in dry weather and climb sharply after rain. Its spillway is ungated: once the pool reaches the crest, water leaves on its own and the operator cannot hold it back. NID classes it high hazard potential. That describes what a failure would cost downstream — loss of life would be expected — and says nothing about how likely a failure is, or what condition the dam is in. National Inventory of Dams record MA00969 — U.S. Army Corps of Engineers, public domain.
Source: USACE NAE/KVD, retrieved Aug 31, 2026, 8:24 AM (UTC+00:00). Official page for Knightville Dam →
Littleville Dam is held back by Littleville Dam , a concrete gravity structure, resisting the reservoir by its own weight alone , standing 164 ft high and running 1,360 ft along its crest , built across WESTFIELD RIVER in Hampden County , near HUNTINGTON . It was completed in 1965 , and is owned by USACE - New England District , to a design credited to CENAE. Its recorded primary purpose is flood risk reduction — the pool is drawn down between storms so there is empty space waiting for the next flood, which is why this level can fall in dry weather and climb sharply after rain. Its spillway is ungated: once the pool reaches the crest, water leaves on its own and the operator cannot hold it back. NID classes it high hazard potential. That describes what a failure would cost downstream — loss of life would be expected — and says nothing about how likely a failure is, or what condition the dam is in. National Inventory of Dams record MA00968 — U.S. Army Corps of Engineers, public domain.
Source: USACE NAE/LVD, retrieved Aug 31, 2026, 8:24 AM (UTC+00:00). Official page for Littleville Dam →
Tully Dam is held back by Tully Dam , a rockfill embankment — quarried rock placed in compacted layers around a sealing core , standing 59 ft high and running 1,570 ft along its crest , built across EAST BRANCH TULLY RIVER in Worcester County , near ATHOL . It was completed in 1949 , and is owned by USACE - New England District , to a design credited to CENAE. Its recorded primary purpose is flood risk reduction — the pool is drawn down between storms so there is empty space waiting for the next flood, which is why this level can fall in dry weather and climb sharply after rain. Its spillway is ungated: once the pool reaches the crest, water leaves on its own and the operator cannot hold it back. NID classes it high hazard potential. That describes what a failure would cost downstream — loss of life would be expected — and says nothing about how likely a failure is, or what condition the dam is in. National Inventory of Dams record MA00970 — U.S. Army Corps of Engineers, public domain.
Source: USACE NAE/TLD, retrieved Aug 31, 2026, 8:24 AM (UTC+00:00). Official page for Tully Dam →
West Hill Dam is held back by West Hill Dam , a concrete gravity structure, resisting the reservoir by its own weight alone , standing 48 ft high and running 670 ft along its crest , built across WEST RIVER in Worcester County , near UXBRIDGE . It was completed in 1961 , and is owned by USACE - New England District , to a design credited to CENAE. Its recorded primary purpose is flood risk reduction — the pool is drawn down between storms so there is empty space waiting for the next flood, which is why this level can fall in dry weather and climb sharply after rain. Its spillway is ungated: once the pool reaches the crest, water leaves on its own and the operator cannot hold it back. NID classes it high hazard potential. That describes what a failure would cost downstream — loss of life would be expected — and says nothing about how likely a failure is, or what condition the dam is in. National Inventory of Dams record MA00971 — U.S. Army Corps of Engineers, public domain.
Source: USACE NAE/WHD, retrieved Aug 31, 2026, 8:24 AM (UTC+00:00). Official page for West Hill Dam →
Read the methodology behind these figures, or search all lakes nationally from the home page.