Water Testing Results
Summer 2004

Merrimack and Souhegan Rivers
E-Coli Bacteria in Colonies per 100 ml. of Sample

Bacteria levels below 88 colonies per 100 ml. are considered safe for public swimming areas. Therefore levels above 88 colonies per 100 ml. are colored in red.

CFS: The water flow volume in the rivers is measured in Cubic Feet per Second.

TNC: To numerous to count.

N/A: Entries labeled N/A are not available. The e-coli counts are usually not available because no one collected the water sample. There may be no volunteer for a particular site, or a volunteer might have been out of town or unable to collect the sample. If you wish to help reduce the number of N/A entries and can collect a few water samples on a Tuesday morning, call George May at 883-3409 or email georgemay (at) msn (dot) com.
Water Sampling Dates
Locations and Measurements 6/8/04 6/22/04 7/6/04 7/20/04 8/3/04 8/17/04 8/31/04 9/14/04

Souhegan River Sites
New Ipswich
River Road above Water Loom Pond
0 66 0 96 72 120 30
New Ipswich
Highbridge
0 19 0 N/A 0 80 N/A
Greenville
Above Greenville Mill Pond
0 16 0 64 38 78 40
Greenville
Downtown Greenville upstream of WWTP
N/A 20 0 148 0 N/A 36
Greenville
Green Bridge below Greenville WWTP
0 31 0 112 74 N/A 23
Wilton
Below the Horseshoe
25 94 14 56 10 240 N/A
Wilton
Downtown
125 460 N/A 400 208 542 490
Milford
Pine Valley Mill
70 195 125 550 28 369 640
Milford
Milford Drive-in
59 424 65
Milford
Behind Hayward Field
133 130 N/A 360 23 398 180
Milford
Below Hartshorn Brook
12 248 30
Milford
Souhegan Valley Boys & Girls Club
31 170 116 410 52 245 300
Milford
Emerson Park
97 170 N/A
Milford
Swing Bridge
39 160 126 780 124 447 415
Milford
Below McLane Dam
50 282 N/A
Milford
Behind Riverside Cemetery
100 125 225 620 86 400 280
Milford
Behind Lorden Plaza
170 150 400 800 121 738 120
Amherst
Amherst Country Club
60 162 325 650 71 407 600
Amherst
Above Beaver Brook
56 511 N/A
Amherst
Conservation land on Fairway Road
500 405 220 N/A 80 453 168
Amherst
Upstream of Boston Post Road (far field)
95 286 N/A
Amherst
Upstream of Boston Post Road (near field)
113 495 N/A
Amherst
Boston Post Road Canoeport
100 156 220 480 90 245 215
Amherst
Thorntons Ferry Road II
70 190 N/A
Merrimack
Fields/Seaverns Bridge
97 N/A N/A
Merrimack
Indian Ledges, Davidson Road
80 90 85 120 40 100 340
Merrimack
Turkey Hill Bridge
31 14 30 170 15 230 344
Merrimack
East Chamberlain Rd.
N/A N/A 6 87 15 250 N/A


Merrimack River Sites

Manchester
Above Amoskeag Dam
14 17 8 20 48 10
Manchester
Arms Park
6 50 10 44 24 80
Manchester
Upstream of Piscataquag River
N/A 17 2 31 38 96
Litchfield
Goffs Falls
4 58 2 64 N/A 160
Merrimack
Depot Street
8 58 6 N/A 16 80
Merrimack
Upstream of Souhegan River
N/A 45 6 77 11 130
Merrimack
Thornton's Ferry
224 50 20 134 30 48
Nashua
Greeley Park
72 22 10 320 N/A N/A
Nashua
Taylors Falls Bridge
72 54 34 340 146 104
Nashua
Sagamore Bridge
460 56 118 160 36 132
Hudson
Sanders Parking Lot
N/A N/A N/A N/A N/A N/A
Tyngsboro
Upstream of Tyngsboro Bridge
N/A N/A 16 86 N/A 100
Souhegan current/historic flow (CFS) 168/138 84/104 52/64 91/47 41/43 56/37 47/39
Merrimack current/historic flow (CFS) 5669/3640 1710/2780 1590/1920 2730/1560 3130/1739 2240/1490
Rainfall Insig. up to 1" Insig.
Air Temperature 19 oC/66 oF 22 oC/72 oF 20 oC/68 oF 20 oC/68 oF
Water Temperature: Merr.
                                Souh.
16 oC/61 oF 23 oC/73 oF
18 oC/64 oF
24 oC/75 oF
20 oC/68 oF
26 oC/79 oF
23 oC/73 oF

Notes:

 


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