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USGS Daily Statistics for the Nation

The statistics generated from this site are based on approved daily-mean data and may not match those published by the USGS in official publications. The user is responsible for assessment and use of statistics from this site. For more details on why the statistics may not match, click here.

USGS 01105600 OLD SWAMP RIVER NEAR SOUTH WEYMOUTH, MA


Norfolk County, Massachusetts
Hydrologic Unit Code 01090001
Latitude  42°11'25", Longitude  70°56'43" NAD27
Drainage area 4.50  square miles
Contributing drainage area 4.50  square miles
Gage datum 69.21 feet above NAVD88
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00060, Discharge, cubic feet per second,
Day of
month		 Mean of daily mean values for each day for water year of record in, ft3/s   (Calculation Period 1965-10-01 -> 2025-09-30)

Calculation period restricted by USGS staff due to special conditions at/near site
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1 11 9.3 13 21 9.8 12 6 2.1 1.8 3.6 8.8 10
2 11 12 17 21 9.1 11 4.8 1.9 3.5 3.3 7.8 9.9
3 11 18 18 18 8.9 9.1 4.2 2 2.9 3.5 8.6 11
4 12 18 14 20 9.7 7.4 4.1 2.1 3 4.4 7.6 11
5 13 13 12 19 9.7 8.2 3.4 3 2.9 4.1 6.4 12
6 10 11 12 17 9.4 13 3.4 2.5 2.5 4 6.8 11
7 9.6 9.6 13 16 8.5 17 3.4 2.4 2.4 3.2 6.6 12
8 11 9.4 15 14 8 14 2.8 4.3 2.5 2.8 7.1 12
9 11 8.8 16 12 9 7.9 3.3 4.3 2.6 5.3 8.2 11
10 12 9.1 17 13 12 6.6 3.8 5.7 2.9 4.8 9.2 12
11 11 10 15 15 11 6.6 2.8 4.6 3.3 4.5 10 12
12 11 9.5 16 13 9.7 6.9 3.1 4.3 2.7 4.5 9.5 17
13 13 12 16 13 9.8 7 3.1 4 2.7 4 11 14
14 13 15 19 13 13 8.5 3.4 4.6 2.2 5.1 9.9 12
15 13 12 23 11 11 6.8 2.7 4.6 2.5 10 10 13
16 13 13 18 15 11 5.5 2.8 3.5 3.1 7.9 10 12
17 12 14 17 15 11 5.6 3.2 2.5 3.2 6.2 12 15
18 11 13 21 12 9.2 5.2 3.4 3.6 5.7 5.9 9.5 16
19 12 13 18 12 9.8 4.7 2.7 3 4.6 6.3 7.9 12
20 14 12 15 11 8.6 4.1 2.3 2.3 3.8 8.1 7.9 9.7
21 12 12 16 11 8.9 4.3 2.9 2.3 3.3 10 8.9 11
22 9.8 12 23 12 7.8 4.5 3.1 2.8 4 6.6 9.9 12
23 9.6 12 22 13 6.7 4.7 3.2 2.7 4.1 7.2 11 12
24 15 15 19 12 8.1 4.1 5.2 3 3.3 6.2 11 14
25 17 18 17 13 10 4.9 4.4 4.1 3.5 6.8 12 13
26 18 17 15 11 12 4.7 3.2 3.1 4.9 7.5 12 12
27 16 14 16 13 9.1 4.3 3 1.8 4.7 7.3 12 16
28 15 13 16 11 7.1 4.6 2.8 2.3 4.3 8 11 12
29 12 13 19 10 7.5 4 2.7 2.9 5 7.7 9.5 13
30 11   22 10 8.1 4.6 2.8 3.8 4.7 8.4 9 12
31 9.6   20   11   2.1 2.8   8.2   10