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.
| Water Sampling Dates | ||||||||
|---|---|---|---|---|---|---|---|---|
| Location | 6/11/02 | 6/25/02 | 7/9/02 | 7/23/02 | 8/6/02 | 8/20/02 | 9/3/02 | 9/17/02 |
Souhegan River Sites |
||||||||
| New Ipswich River Road above Water Loom Pond |
2 | 26 | 15 | 48 | 28 | 20 | 32 | 76 |
| New Ipswich Highbridge |
32 | 40 | 4 | N/A | 42 | 32 | 52 | N/A |
| Greenville Above Greenville Mill Pond |
20 | 50 | 64 | 6 | 0 | 40 | 70 | 0 |
| Greenville Downtown Greenville upstream of WWTP |
40 | 60 | 4 | 40 | N/A | 24 | 2 | 16 |
| Greenville Green Bridge below Greenville WWTP |
<1 | 36 | 184 | 124 | 0 | 72 | 2 | 360 |
| Wilton Below the Horseshoe |
33 | 32 | 84 | 28 | 84 | 124 | 48 | N/A |
| Wilton Downtown |
<1 | 130 | 2 | <1 | >320 | N/A | 410 | 96 |
| Milford Pine Valley Mill |
6 | 96 | 176 | 206 | 120 | 86 | 100 | >800 |
| Milford Behind Hayward Field |
100 | 113 | 93 | 93 | 100 | N/A | N/A | N/A |
| Milford American Stage Festival |
130 | 126 | 113 | 146 | 140 | 100 | 846 | 280 |
| Milford Swing Bridge |
60 | 160 | 146 | 193 | 226 | 146 | 313 | 760 |
| Milford Behind Riverside Cemetery |
70 | 160 | 173 | 126 | 100 | 133 | 193 | 786 |
| Milford Behind Lorden Plaza |
120 | 173 | 146 | 120 | 180 | N/A | 180 | 586 |
| Amherst Amherst Country Club |
4 | 120 | 108 | 156 | 132 | 120 | 25 | 246 |
| Amherst Conservation land on Fairway Road |
170 | 166 | 153 | 186 | 150 | 210 | N/A | 270 |
| Amherst Boston Post Road Canoeport |
73 | 150 | 120 | 245 | 226 | 253 | 200 | 260 |
| Merrimack Indian Ledges, Davidson Road |
4 | 72 | 2 | <1 | 0 | 1 | 0 | 0 |
| Merrimack Turkey Hill Bridge |
6 | 110 | <1 | <1 | 0 | 0 | N/A | 0 |
| Merrimack East Chamberlain Rd. |
N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| Lyndeborough Purgatory and Curtis Brook |
N/A | N/A | N/A | N/A | 4 | N/A | N/A | N/A |
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| Manchester Above Amoskeag Dam |
<1 | 30 | <1 | 2 | 0 | 0 | 0 | 4 |
| Manchester Arms Park |
2 | 34 | <1 | 8 | 3 | 1 | 50 | 2 |
| Manchester Upstream of Piscataquag River |
N/A | N/A | N/A | 4 | 6 | 0 | 16 | 10 |
| Litchfield Goffs Falls |
N/A | 42 | <1 | <1 | 0 | 0 | 16 | 0 |
| Merrimack Depot Street |
N/A | N/A | 148 | 120 | 0 | 22 | 30 | 750 |
| Merrimack Upstream of Souhegan River |
<1 | N/A | <1 | <1 | 0 | 0 | 4 | N/A |
| Merrimack Thornton's Ferry |
130 | 112 | 40 | 60 | 46 | 10 | 40 | >800 |
| Nashua Greeley Park |
16 | 76 | 40 | 20 | 6 | 15 | N/A | N/A |
| Nashua Taylors Falls Bridge |
50 | 88 | 68 | 32 | 36 | 36 | 28 | 104 |
| Nashua Sagamore Bridge |
80 | 144 | 200 | 40 | 40 | N/A | 140 | 310 |
| Hudson Sanders Parking Lot |
50 | 160 | 30 | 8 | 8 | N/A | 68 | >800 |
| Tyngsboro Upstream of Tyngsboro Bridge |
N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
Notes:
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Last modifed: 9/19/02 11:20 PM
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