Merrimack and Souhegan Rivers
E-Coli Bacteria in Colonies per 100 ml. of Sample
| Water Sampling Dates | ||||||||
|---|---|---|---|---|---|---|---|---|
| Location | 6/8/99 | 6/22/99 | 7/6/99 | 7/20/99 | 8/3/99 | 8/17/99 | 8/31/99 | 9/14/99 |
Souhegan River Sites |
||||||||
| New Ipswich River Road above Water Loom Pond |
122 | 40 | 80 | 69 | 20 | 66 | 20 | 41 |
| Greenville Above Greenville Mill Pond |
431 | 103 | 91 | 430 | 442.3 | 74 | 37 | 237 |
| Greenville Downtown Greenville upstream of WWTP |
193 | 186 | 93 | 950 | 27 | 47 | 118 | 83 |
| Greenville Green Bridge below Greenville WWTP |
81 | 131 | 141 | 309 | 16 | 49 | 69 | 800+ |
| Wilton Below the Horseshoe |
52 | 45 | 60 | 71 | 18.8 | 34 | 17 | 58 |
| West Milford Brook upstream of Pine Valley Mill |
38 | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| West Milford Railroad bridge upstream of Pine Valley Mill |
82 | 139 | 75 | 121 | 277.3 | 173 | 211 | 207 |
| Milford Pine Valley Mill |
68 | 99 | 127 | 129 | 177.6 | 145 | 199 | 175 |
| Milford Emerson Park |
140 | 80 | 300 | 345 | 220 | 480 | 170 | 240 |
| Milford Swing Bridge |
170 | 270 | 210 | 420 | 680 | N/A | 360 | 250 |
| Milford Behind Riverside Cemetery |
70 | 150 | 210 | 450 | 190 | 410 | 140 | 260 |
| Milford Behind Video Update next to Shaw's |
110 | 140 | 180 | 435 | 320 | 280 | 80 | 170 |
| Amherst Conservation land on Fairway Road |
240 | 150 | 280 | 405 | 480 | 250 | 150 | 60 |
| Amherst Boston Post Road Bridge |
100 | 150 | 190 | 270 | 610 | 170 | 170 | 200 |
| Merrimack Indian Ledges, Davidson Road |
50 | 30 | 91 | 18 | 40 | 10 | 64 | <1 |
| Merrimack Turkey Hill Bridge |
27 | 20 | 79 | 26 | 220 | 21 | 160 | 8 |
| Merrimack East Chamberlain Rd. |
N/A | 10 | 116+ | 24 | 12 | 2 | 44 | 26 |
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| Litchfield Goffs Falls |
25 | 10 | 92 | 208 | 64.7 | 45 | 37 | 18 |
| Merrimack Depot Street |
13 | 5 | N/A | 692 | 140 | N/A | N/A | 16 |
| Litchfield Upstream of Souhegan River |
13 | 20 | N/A | 98 | N/A | N/A | N/A | 51 |
| Merrimack Thornton's Ferry |
N/A | N/A | N/A | 56 | N/A | 16 | 12 | 24 |
| Nashua Greeley Park |
10 | 10 | 32 | 36 | 12 | N/A | 4 | 8 |
| Nashua Taylors Falls Bridge |
25 | 5 | 20 | 40 | 20 | 8 | 4 | 4 |
| Nashua Sagamore Bridge |
20 | 5 | 28 | N/A | 16 | N/A | N/A | N/A |
| Hudson Sanders Parking Lot |
10 | 10 | 16 | 104 | 12 | 12 | N/A | 20 |
| Tyngsboro Upstream of Tyngsboro Bridge |
5 | 5 | 28 | 212 | 68 | 20 | 8 | 16 |
Notes: