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View Souhegan, Merrimack river tests in a larger map
This map shows the results of E. coli bacteria counts at test sites on the Souhegan, Merrimack and Nashua rivers during during the most recent sampling run by volunteers. Samples on the Souhegan and Merrimack are taken every two weeks from June through September by the Souhegan Watershed Association and the Lower Merrimack River Local Advisory Committee. Samples on the Nashua and associated rivers are taken once a month through October by the Nashua River Watershed Association.
Green bubbles mark excellent results, with little bacteria. Yellow bubbles mark adequate to poor results, where swimming is discouraged. Red bubbles mark very high bacteria levels, where contact with the water should be avoided. A purple "stick pin" means no results were obtained in the most recent session. Click on a bubble to see details about the site.
Map by David Brooks. Questions or problems, e-mail dbrooks@nashuatelegraph.com For breaking environmental and wildlife news, read the GraniteGeek blog: www.granitegeek.org
September: Bacteria levels back to normal, now that wet weather is past
By DAVID BROOKS Staff Writer | Sunday, October 2, 2011
Bacteria tests on the Merrimack, Souhegan and Nashua rivers ended the summer on a good note following dismal results weeks earlier, thanks largely to dry …
Aug. 30: After Irene, very high bacteria levels throughout rivers
Friday, September 2, 2011
As expected, bacteria counts found Tuesday by volunteers on the Souhegan and Merrimack rivers were extremely high at almost all locations because of debris and …
Storm-swollen Souhegan River tests water testers
Friday, September 2, 2011
Tropical Storm Irene didn’t do much damage here, but its 4 inches of rain did fill up our rivers. On Tuesday, volunteers gathered samples from …
Hot weather, storms raise bacteria levels in river
Wednesday, July 27, 2011
E. coli readings from the fourth water sampling session of the summer by Souhegan Watershed Association volunteers saw normal to high e-coli readings in the …
July 19: Hot weather, storms raise bacteria
Wednesday, July 27, 2011
E. coli readings from the fourth water sampling session of the summer by Souhegan Watershed Association volunteers saw normal to high e-coli readings in the …
July 5, 2011: Souhegan in Milford tests high in bacteria
By Telegraph Staff | Saturday, July 16, 2011
Intermittent rains around July 4 apparently washed material into the Souhegan River, judging from sharply higher bacteria counts discovered during the most recent volunteer testing. …
Creosote pollution may last for years at site
By TOM WEST Correspondent | Tuesday, June 28, 2011
NASHUA – A North End contamination site that has worried residents for decades won’t be cleaned up any time soon, a state official said. According …
June 2011: Nashua River clean in Nashua, more problems upstream
Wednesday, June 22, 2011
The Nashua River was very clean in Nashua according to tests on the most recent collection of water samples by volunteers for the Nashua River …
June 7, 2011: Tests find rivers in good condition
Tuesday, June 21, 2011
The first round of annual testing of local rivers for bacteria by volunteers found that the Merrimack River remains extremely clean, as it has been …
Volunteers take readings in Souhegan, Merrimack rivers
By DAVID BROOKS Staff Writer | Sunday, June 5, 2011
The 15th season of one of the state’s longest-running citizen science projects will start next week: testing the quality of water in the Souhegan and …
May 2011: Nashua River not too clean
Thursday, June 2, 2011
The rivers we monitor didn’t rate a good grade this month for cleanliness. Out of the 40 sites monitored in May, 20 did not meet …
Aug. 2010: Low water, high temperatures increase bacteria
By DAVID BROOKS Staff Writer | Thursday, June 2, 2011
When it comes to e.coli bacteria, the Merrimack River remains clean, but the low water levels in the Souhegan River mean that it’s generally not …
Want to help with monitoring our local rivers?
Friday, August 20, 2010
The Souhegan Watershed Association needs volunteers to help with the water quality monitoring program on the Souhegan and Merrimack Rivers. Volunteers will be trained and …
Watershed Council staffers test Merrimack
By CAMERON KITTLE Staff Writer | Thursday, August 12, 2010
Ryan Jennison walks down the Greeley Park boat ramp once a month with a cooler in one hand and a YSI 556 MPS in the …
Aug. 3: Low flow, average bacteria in local rivers
By GEORGE MAY Special report | Friday, August 6, 2010
Hot humid weather and the lack of rain brought lots of people to the local rivers as evidenced by lots of trash noticed by volunteer …
June 29: Rivers are good for swimming
By GEORGE MAY Special report | Thursday, July 8, 2010
Very hot weather and the lack of rain for the last several holiday days brought out good news for all the swimmers in local rivers. …
Nashua River did well in June
By KATHRYN NELSON Special report | Thursday, June 24, 2010
The June monitoring day was dry with no rain in the previous 2 days but 0.5 inches reported in the previous 7 days. The sites …
June 22: Mixed results on first day of summer
By GEORGE MAY Special report | Thursday, June 24, 2010
Water quality monitors on the Souhegan and Merrimack Rivers noted all kinds of summer activities on the first full day of summer. Swimmers, boaters, fishermen …
Volunteers turn citizen scientists
By DAVID BROOKS Staff Writer | Friday, June 11, 2010
There are plenty of good reasons to wander down to a riverbank at 8 o’clock on a beautiful morning. One of them, it turns out, …
June 8, 2010: High e.coli counts, as heavy rain washed material into rivers
Thursday, June 10, 2010
Water quality monitoring on the Souhegan and Merrimack Rivers began for the 14th consecutive year last Tuesday morning. Dozens of volunteer monitors fanned out over …
