Woonasquatucket River Watershed Council
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The Watershed Council Office is at
27 Sims Avenue
Providence, RI 02909
(next to The Steel Yard)
Tel: 401.861.9046
Fax: 401.861.9038


If you have questions or comments about this site please contact Bruce Hooke

If you have questions about the activities of the Council please contact our Executive Director, Alicia Lehrer

2007 Water Quality Monitoring Data
Monitoring Sites
Dissolved Oxygen and Water Temperature
Bacterial Monitoring
Collection Notes
 
Monitoring Sites

Starting in 2005 the Watershed Council is sponsoring water quality monitoring at two sites on the river. The first site is at Cricket Park in Greystone, on the Johnston - North Providence boundary. The second site is just above the Rising Sun Dam, which is just upstream from Donigian Park, where we started monitoring in 2003.

The water quality of many of the lakes and ponds in the watershed is also being monitored under the URI Watershed Watch program. The data for these sites are available on the Watershed Watch web site.

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Dissolved Oxygen and Temperature

Dissolved oxygen is important to the health of animals that live in the river because they need air to breath too. If the dissolved oxygen drops below 3 mg/L aquatic animals cannot survive. Between 3 and 5 mg/L it is hard for organisms to function, and above 5 is good. Oxygen levels are generally higher in the spring when the water is cold, because cold water can hold more oxygen. For more information visit the URI Watershed Watch web site and, in particular, read this PDF document on dissolved oxygen (about PDF format).

To run the test, two samples are collected and two tests are run on each sample. The four results are averaged to get the final value. The test used is the modified Winkler titration test.

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Bacteria

The samples for pH, alkalinity, nutrients, and bacteria testing are collected once a month and taken to URI for testing. The bacteria results are generally available within a few weeks and are posted on this web site when they become available. The other results are generally not available until the winter or spring. These results can be found on the Watershed Watch web site.

In 2006 Watershed Watch began testing for the bacteria group enterococci, instead of fecal coliforms. This change was made because the US EPA identified enterococci as a better indicator of the risk of contacting gastrointestinal disorders as a result of coming into contact with the water than fecal coliforms. As a result of this finding, RI DEM and RI Department of Health are also switching to using enterococci as their standard for recreational contact (swimming).

The Rhode Island standard for freshwater used for recreation is 61 enterococci (count per 100 ml). For more information visit the URI Watershed Watch web site and, in particular, read this PDF document on bacterial monitoring (about PDF format).

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Collection Notes

Sunday, April 29, 2007 - 7:50 AM
Donigian Park, Providence
Data Collected By: Bruce Hooke

Air Temperature: 15 C / 54 F
Weather: Light overcast (bright but no shadows), no wind
Rainfall in the past 48 hours*: 0.2 cm (0.08 inches)

Water Temperature: 14.1 C / 57.4 F
Dissolved Oxygen: 9.6 mg/L

Notes: A Great Blue Heron lifted off from below the dam as I was walking up to the site (when I got home I was looking at my notes from last year and on the first day last year a Great Blue Heron did the same thing!). A nice welcome to another year of monitoring on the Woonasquatucket River at Donigian Park. There is lots of bird life out today, including mallards, a canada goose, numerous songbirds and even some crows. It is a classic late-April morning: damp and cloudy, but warm enough to provide assurance that winter is truly over. The trees are starting to leaf out and the river is high and running hard (and a bit smelly) from the heavy rain last week.

Friday, May 11, 2007
Cricket Park, Johnston - North Providence
Data Collected By: Caroline Brown

Weather: Clear, gentle wind.
Rainfall in the past 48 hours*: None

Water Temperature: 19.1 C / 66.4 F
Dissolved Oxygen: 8.2 mg/L

 

Friday, May 11, 2007 - 6:45 AM
Donigian Park, Providence
Data Collected By: Bruce Hooke

Air Temperature: 19 C / 66 F
Weather: Light overcast (bright but no shadows), gentle wind
Rainfall in the past 48 hours*: None

Water Temperature: 19.9 C / 67.8 F
Dissolved Oxygen: 8.3 mg/L

Notes: The sun is breaking through the fog, and a sky that was gray and white when I got here is turning blue. The sky overhead and to the north is the first to turn blue but the sun keeps coming in and out of the fog to the south, down closer to the bay. Sometimes the sun is completely hidden, sometimes it is shining brightly, and sometimes it is just a gleaming disk in the fog. There appears to be a Canada Goose nesting on the little island near where I collect my samples.

Saturday, May 26, 2007
Cricket Park, Johnston - North Providence
Data Collected By: Caroline Brown

Weather: Clear and calm
Rainfall in the past 48 hours*: None

Water Temperature: 19.8 C / 67.6 F
Dissolved Oxygen: 7.9 mg/L

 

Saturday, May 26, 2007 - 8:00 AM
Donigian Park, Providence
Data Collected By: Bruce Hooke

Air Temperature: 24 C / 75 F
Weather: Clear and calm
Rainfall in the past 48 hours*: None

Water Temperature: 21 C / 70 F
Dissolved Oxygen: 7.4 mg/L

Notes: It's Memorial Day weekend and the weather feels more like the 4th of July -- hot and hazy at 8AM! Some very large bumblebees are hurrying through a patch of yellow flowers gathering food and pollinating the flowers. It is amazing what a breeze will do. While I was analyzing my samples on the bank a breeze came up and suddenly if felt more like late May again.

Remember to take some time this weekend to remember those who have died in service to our country.

Tuesday, June 12, 2007 - 7:45 AM
Donigian Park, Providence
Data Collected By: Bruce Hooke

Air Temperature: 19 C / 66 F
Weather: Clear and gentle wind
Rainfall in the past 48 hours*: 0.7 cm (0.3 inches)

Water Temperature: 21 C / 70 F
Dissolved Oxygen: 7.9 mg/L

Notes: The sun is slipping in and out of the clouds and everything is damp and vibrant from last night's rain. The weather also brought down a precipitation of white flowers from a tree near the river. They lie scattered across the damp ground like giant snowflakes.

In the park two pair of Canada Geese were sheparding around two gooslings each. As I was sitting near the dam analyzing my samples the whole gang came marching up the path right past me and went down into the river right were I had just come ashore after collecting my samples.

Saturday, June 16, 2007 - 7:45 AM
Cricket Park, Johnston - North Providence
Data Collected By: Caroline Brown

Air Temperature: 16 C / 60 F
Weather: Clear and calm
Rainfall in the past 48 hours*: None

Water Temperature: 18.5 C / 65.3 F
Dissolved Oxygen: 7.3 mg/L

 

Saturday, June 16, 2007 - 7:30 AM
Donigian Park, Providence
Data Collected By: Bruce Hooke

Air Temperature: 16 C / 60 F
Weather: Clear and calm
Rainfall in the past 48 hours*: None

Water Temperature: 18.4 C / 65.1 F
Dissolved Oxygen: 8.4 mg/L

Notes: The river is teaming with life this morning: the four Canada Geese with four goslings are back, there are a couple of ducks below the dam with half a dozen ducklings, I saw two fish jump, and in the shallow water there was a school of tiny fish flitting around. It is a beautiful early summer morning: cool in the shade, warm in the sun, and a blue sky overhead.

Saturday, June 30, 2007 - 7:20 AM
Cricket Park, Johnston - North Providence
Data Collected By: Caroline Brown

Air Temperature: 14.5 C / 58.1 F
Weather: Clear and calm
Rainfall in the past 48 hours*: None

Water Temperature: 20.0 C / 68.0 F
Dissolved Oxygen: 7.5 mg/L

 

Saturday, June 30, 2007 - 6:40 AM
Donigian Park, Providence
Data Collected By: Bruce Hooke

Air Temperature: 18 C / 64 F
Weather: Clear and calm
Rainfall in the past 48 hours*: None

Water Temperature: 22 C / 72 F
Dissolved Oxygen: 7.3 mg/L

Notes: A beautiful morning on the river. There's not a cloud in the sky. The sun is filtering through the leaves as it slowly climbs up through the trees into the sky and the are birds singing in every direction. As I was standing in the river, in the shade, I watched a bird flying high overhead, twisting and turning in the morning sunlight.

Friday, July 13, 2007 - 7:15 AM
Donigian Park, Providence
Data Collected By: Bruce Hooke

Air Temperature: 21.6 C / 70.9 F
Weather: Clear and calm
Rainfall in the past 48 hours*: None

Water Temperature: 22.7 C / 72 F
Dissolved Oxygen: 6.3 mg/L

Notes: A lovely, cloudless morning on the river. A duck was going head down, tails up to get food off the bottom right above the dam when I got to the site. I'm about to leave on a two week trip so Douglas Stephens will be filling in for me next week. Thanks Doug!

Friday, July 20, 2007 - 7:30 AM
Cricket Park, Johnston - North Providence
Data Collected By: Caroline Brown

Weather: Heavy overcast and calm
Rainfall in the past 48 hours*: 2.5 cm (1 inch)

Water Temperature: 22.3 C / 72.1 F
Dissolved Oxygen: 6.8 mg/L

 

Friday, July 20, 2007 - 7:30 AM
Donigian Park, Providence
Data Collected By: Douglas Stephens

Air Temperature: 23.5 C / 74.3 F
Weather: Heavy overcast and calm
Rainfall in the past 48 hours*: 2.5 cm (1 inch)

Water Temperature: 23.5 C / 74.3 F
Dissolved Oxygen: 6.4 mg/L

 

Saturday, August 4, 2007 - 8:00 AM
Cricket Park, Johnston - North Providence
Data Collected By: Caroline Brown

Weather: Clear and gentle wind
Rainfall in the past 48 hours*: None

Water Temperature: 23.9 C / 75.0 F
Dissolved Oxygen: 7.5 mg/L

 

Saturday, August 4, 2007 - 8:00 AM
Donigian Park, Providence
Data Collected By: Bruce Hooke

Air Temperature: 26.0 C / 78.8 F
Weather: Clear and gentle wind
Rainfall in the past 48 hours*: None

Water Temperature: 25.5 C / 77.9 F
Dissolved Oxygen: 6.0 mg/L

Notes: There's no doubt about it; its summertime. The river is low and slow but wonderfully clear. The sky is hazy and the air is warm and damp even at 8 in the morning. A Spotted Sandpiper is working his way along the face of the dam, just below the crest, in the falling water. He is hanging onto the dam with his feet, walking along and apparently picking some sort of food out of the rapidly moving water. Quite a trick.

Let's pause for a moment to remember Ken Weber, a great writer and naturalist who did so much to teach us all about and show us how to see for ourselves the natural world that is right outside our door but so often hidden from plain sight. He passed away on Thursday at the much too young age of 63. He will be greatly missed.

Thursday, August 16, 2007 - 7:20 AM
Cricket Park, Johnston - North Providence
Data Collected By: Caroline Brown

Weather: Clear and calm
Rainfall in the past 48 hours*: None

Water Temperature: 21.4 C / 70.5 F
Dissolved Oxygen: 8.3 mg/L

 

Thursday, August 16, 2007 - 6:00 AM
Donigian Park, Providence
Data Collected By: Bruce Hooke

Air Temperature: 21 C / 70 F
Weather: Partly cloudy and calm
Rainfall in the past 48 hours*: None

Water Temperature: 22.3 C / 72.1 F
Dissolved Oxygen: 6.3 mg/L

Notes: There is a muted, low-energy feel to the morning. The river is as low as it's been all summer, there is not a breath of wind, and because it is cloudy there is no sun sparkling through the trees; but there is a whole flock of birds catching their breakfast of bugs above the river, and small fish, or some other small river creatures, keep rising to the surface and making ripples on the still water.

Sunday, September 2, 2007 - 7:45 AM
Cricket Park, Johnston - North Providence
Data Collected By: Caroline Brown

Weather: Clear
Rainfall in the past 48 hours*: None

Water Temperature: 19.9 C / 67.8 F
Dissolved Oxygen: 8.0 mg/L

 

Saturday, September 1, 2007 - 7:55 AM
Donigian Park, Providence
Data Collected By: Bruce Hooke

Air Temperature: 18.8 C / 65.8 F
Weather: Clear and gentle wind
Rainfall in the past 48 hours*: None

Water Temperature: 21.2 C / 70.2 F
Dissolved Oxygen: 6.2 mg/L

Notes: The official first day of fall is still three weeks away, but it feels like fall today, this first day of September: the sky is a clear, sharp blue and for the first time in months it is sunny and cool at the same time. The river is very low, even lower than it was two weeks ago, and it is only coming over the dam in some places rather than all the way across. Three crows flew across the river as I was collecting my samples, nothing unusually really, but I don't usually see crows here.

Saturday, September 15, 2007 - 6:45 AM
Cricket Park, Johnston - North Providence
Data Collected By: Caroline Brown

Weather: Heavy overcast, calm wind, raining
Rainfall in the past 48 hours*: 0.7 cm.

Water Temperature: 19.4 C / 66.9 F
Dissolved Oxygen: 8.2 mg/L

 

Saturday, September 15, 2007 - 6:50 AM
Donigian Park, Providence
Data Collected By: Bruce Hooke

Air Temperature: 18.8 C / 65.8 F
Weather: Heavy overcast, calm wind, raining
Rainfall in the past 48 hours*: 0.7 cm.

Water Temperature: 19.2 C / 66.6 F
Dissolved Oxygen: 7.3 mg/L

Notes: Big doings at the site: a fish ladder is being built on the other side of the river to give fish a way to get around the dam. So, there is a barrier of huge white sandbags around the area where the ladder is being built and the shoreline is all torn up. The fish will, we hope, be very happy when the fish ladder is ready for them to use.

A gentle but steady rain is falling this morning, making beautiful patterns on the surface of the river. Each raindrop makes a silvery flash as it hits the water, so the whole image is like a sea of twinkling lights between walls of lush green vegetation, rejuvenated by the recent rains after a very dry August.

Saturday, September 29, 2007 - 7:30 AM
Cricket Park, Johnston - North Providence
Data Collected By: Caroline Brown

Weather: Clear and moderate wind
Rainfall in the past 48 hours*: 0.1 cm. (0.04")

Water Temperature: 18.2 C / 64.8 F
Dissolved Oxygen: 7.9 mg/L

 

Sunday, September 30, 2007 - 7:10 AM
Donigian Park, Providence
Data Collected By: Bruce Hooke

Air Temperature: 11.5 C / 52.7 F
Weather: clear and calm
Rainfall in the past 48 hours*: None

Water Temperature: 17.9 C / 64.2 F
Dissolved Oxygen: 7.4 mg/L

Notes: Fall is definitely here. I arrived at the site a few minutes before 7 AM and the sun was just creeping above the horizon. It is a still morning and the low sun is spreading a soft, warm light across the scene. The leaves are still green, but if this cool weather keeps up, I'm sure they will start turning soon. The river is still very low.

It is hard to tell if much progress has been made on the fish ladder. The hole seems a little deeper and it looks like the bottom of the hole is pretty much dry. Sort of odd looking at dry land well below the surface of the river.

Saturday, October 13, 2007 - 7:20 AM
Cricket Park, Johnston - North Providence
Data Collected By: Caroline Brown

Weather: Clear
Rainfall in the past 48 hours*: 0.3 cm. (0.1")

Water Temperature: 14.9 C / 58.8 F
Dissolved Oxygen: 7.6 mg/L

 

Sunday, October 14, 2007 - 7:50 AM
Donigian Park, Providence
Data Collected By: Bruce Hooke

Air Temperature: 9.0 C / 48.2 F
Weather: clear and calm
Rainfall in the past 48 hours*: None

Water Temperature: 12.9 C / 55.2 F
Dissolved Oxygen: 8.1 mg/L

Notes: Fall weather has finally arrived: the sky is deep blue, the sun is shining brightly and the air still has a definite chill to it. The river is running cold and clear and feels almost like a mountain stream this morning!

Thursday, October 18, 2007 - 7:30 AM
Cricket Park, Johnston - North Providence
Data Collected By: Douglas Stephens

Weather: Heavy overcast and calm
Rainfall in the past 48 hours*: None

Water Temperature: 15.1 C / 59.2 F
Dissolved Oxygen: 9.1 mg/L

 

Thursday, October 18, 2007 - 7:00 AM
Donigian Park, Providence
Data Collected By: Bruce Hooke

Air Temperature: 16.0 C / 60.8 F
Weather: Heavy overcast and calm
Rainfall in the past 48 hours*: None

Water Temperature: 14.1 C / 57.4 F
Dissolved Oxygen: 8.5 mg/L

Notes: It is a misty morning and everything around me looks soft and muted, even gentle; but the cold river water is a reminder that fall is here and another season of monitoring on the Woonasquatucket has come to an end. Most of the leaves on the trees are still quite green, but some reds and yellows are starting to show up. Even on this windless morning, there is an irregular procession of yellow leaves floating down to land on the ground or in the river. One lands very neatly right on the crest of the dam and is immediately swept over the edge and into the churning water below.

 

* Note: Rainfall amounts are record at a rain gauge about a mile WSW of Donigian Park. These rainfall amounts should be view as approximations because trees may shade this gauge under certain conditions.

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