February 2021 CURRENT WATER RESOURCES CONDITIONS IN MASSACHUSETTS

CURRENT WATER RESOURCES CONDITIONS IN MASSACHUSETTS

U.S. Department of the Interior Seal

February 2021

USGS New England Water Science Center, Massachusetts-Rhode Island Office

PROVISIONAL DATA: All data presented in this report are provisional and subject to revision.

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Monthly Surface Water Conditions Map

Monthly Groundwater Conditions Map

SURFACE WATER
Station Number	Station Name	Drainage Area (mi²)	Years Of Record	Normal Range (cfs)	Monthly Mean (cfs)	Monthly Mean (in)	Percentile Class
01096000	Squannacook River near West Groton, MA	65.9	71	72.4 - 174	96	1.52	Normal
01097300	Nashoba Brook near Acton, MA	12.8	57	15.9 - 36.4	16.2	1.32	Normal
01101000	Parker River at Byfield, MA	21.3	75	32.8 - 69.9	29.4	1.44	Below normal
01103500	Charles River at Dover, MA	183	83	285 - 551	322	1.83	Normal
01105600	Old Swamp River near South Weymouth, MA	4.5	54	7.54 - 15.6	13	3.01	Normal
01105730	Indian Head River at Hanover, MA	30.3	54	59.5 - 113	107	3.68	Normal
01105880	Herring River at North Harwich, MA	9.4	54	7.23 - 17	9.26	1.03	Normal
01108000	Taunton River near Bridgewater, MA	261	91	556 - 908	750	2.99	Normal
01109000	Wading River near Norton, MA	43.3	95	76 - 130	86.5	2.08	Normal
01162500	Priest Brook near Winchendon, MA	19.4	104	15.9 - 36.6	21.3	1.14	Normal
01169000	North River at Shattuckville, MA	89	81	89.8 - 208	134	1.57	Normal
01170100	Green River near Conway, MA	41.4	53	44.3 - 94.8	111	2.79	Above normal
01181000	West Branch Westfield River at Huntington, MA	94	85	102 - 238	125	1.38	Normal
01197500	Housatonic River near Great Barrington, MA	282	107	291 - 637	254	0.94	Below normal
01198000	Green River near Great Barrington, MA	51	69	60.1 - 124	44.9	0.92	Much below normal

GROUNDWATER
Station Number	Station Name	Years Of Record	Normal Range (ft)	Monthly Median (ft)	Departure From Monthly Median (ft)	Percentile Class
411555070021901	NBW 228 (Nantucket, MA)	42¹	26.90 - 13.30	13.05	-12.65	Above normal
412346070353403	ENW 52 (Edgartown, MA)	34¹	19.30 - 10.20	18.51	-0.09	Normal
415228070554601	LKW 14 (Lakeville, MA)	55¹	16.70 - 13.40	7.88	-7.22	High
422812071244401	ACW 158 (Acton, MA)	54¹	19.50 - 17.50	17.95	-0.66	Normal
424520070562401	NIW 27 (Newbury, MA)	56¹	6.45 - 4.86	5.54	-0.22	Normal
422341071464901	WSW 26 (West Boylston, MA)	25¹	5.71 - 3.08	5.13	0.74	Normal
422745073112001	PTW 51 (Pittsfield, MA)	57¹	16.30 - 14.90	16.22	0.52	Normal
423401071093801	XMW 78 (Wilmington, MA)	68¹	8.04 - 6.86	3.17	-4.35	High
424204072015201	XNW 13 (Winchendon, MA)	76¹	5.42 - 4.35	4.68	-0.17	Normal
¹ Daily Value Records and Field Readings ² Daily Value Records Only

Flow or Water Level	Percentile Range	Explanation
Low	0^th	The monthly mean streamflow or median water level during this month is the lowest ever recorded during the period of record for this site.
Much below normal	0^th to 10^th	The monthly mean streamflow or median water level during this month is less than the 10^th percentile when compared to all of the months during the period of record for this site.
Below normal	10^th to 25^th	The monthly mean streamflow or median water level during this month is between the 10^th and 25^th percentiles when compared to all of the months during the period of record for this site.
Normal	25^th to 75^th	The monthly mean streamflow or median water level during this month is between the 25^th and 75^th percentiles when compared to all of the months during the period of record for this site.
Above normal	75^th to 90^th	The monthly mean streamflow or median water level during this month is between the 75^th and 90^th percentiles when compared to all of the months during the period of record for this site.
Much above normal	90^th to 100^th	The monthly mean streamflow or median water level during this month is greater than the 90^th percentile when compared to all of the months during the period of record for this site.
High	100^th	The monthly mean streamflow or median water level during this month is the highest ever recorded during the period of record for this site.