HANSON RIVERWATCH October 2008 – April 2009 Amy Hurst Greg Mahoney Nick Levesque Pheobe Deneen.
-
Upload
loreen-morgan -
Category
Documents
-
view
214 -
download
0
Transcript of HANSON RIVERWATCH October 2008 – April 2009 Amy Hurst Greg Mahoney Nick Levesque Pheobe Deneen.
HANSON RIVERWATCH
October 2008 – April 2009
Amy Hurst
Greg MahoneyNick Levesque
Pheobe Deneen
The Indian Head River• The Indian Head River forms the Northern Border of the Town of Hanson, Other towns that
impact the water quality directly in the areas of study include Pembroke to the east and Hanover to the north, northeast. Rockland and Abington also contribute via the Cushing Brook Watershed.
• There are approximately 8 miles between our upstream site near Factory Pond and our downstream site at Ludham’s Ford or as other’s call it, Curtis’ Crossing.
• The river covers about eight acres of land in this area and was most likely used as a fishing and travel spot for the Wompatuck Indians.
• A guide named James Luddam carried Governor Winthrop across the Indian Head River in 1632 in order to get to Weymouth, Massachusetts.
• Though the river is called The Drinkwater River in other towns, we have chosen to refer to it as the Indian Head River in the scope of our study.
• There is a small beaver population and the river is annually stocked with trout. Massachusetts Fish and Wildlife has posted the river in it’s entirety from Forge pond in Hanover to route 3 in Norwell and Pembroke including Factory Pond as P6; fishing resources contaminated with mercury. If herring are caught, they must be thrown back into the river. This applies more to the Pembroke side of the river, as there is a fish ladder in Luddams Ford Park.
• The Frenchs Stream Watershed, Cushing Brook Watershed, and Drinkwater River Watershed all flow into the Indian Head River watershed.
• Frenchs Stream contains pathogens, nutrients, low dissolved oxygen, storm water, agricultural runoff, and effluent from Rockland WWTP
• The Drinkwater River contains pathogens, nutrients, low dissolved oxygen, mercury, agricultural runoff, and impaired fish passage.
• Factory Pond has mercury, invasive aquatic plants, shoreline erosion, and stormwater outfalls
• Indian Head River has impaired fish passage, an endangered species habitat, mercury, and lead
• Forge Pond contains excess nutrients, stormwater outfalls, invasive plants, and turbidity
http://www.jonesriver.org/getfile/southcoastal/3indianhead.pdf
SITE A Broadway Hanson
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
River Water
Sky
-2
-1.5
-1
-0.5
0
0.5
Depth (Feet)
Section
River Water River Surface Sky
Depth Cross SectionBroadway Street- Site A
Comparison of Dissolved Oxygen and pH
Broadway Street- Site A
6.74
6.75
6.76
6.77
6.78
6.79
6.8
6.81
Time
pH
10.3
10.4
10.5
10.6
10.7
10.8
10.9
11
11.1
pH
DO
Comparison of Dissolved Oxygen and pH
Broadway - Site A, October 8, 2008
SITE BCurtis Crossing, Hanover
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
River Water
Sky
-1.4
-1.2
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
Depth (Feet)
Segment
River Water River Surface Sky
Depth Cross SectionCurtis Crossing- Site B
Comparison of Dissolved Oxygen and pH
Curtis Crossing- Site B
7.025
7.03
7.035
7.04
7.045
7.05
7.055
7.06
7.065
7.07
7.075
10
10.1
10.2
10.3
10.4
10.5
10.6
10.7
ph do
Comparison of Dissolved Oxygen and pH
Curtis Crossing- Site B, October 8, 2008
Comparison of Dissolved Oxygen and Temperature Curtis
Crossing- Site B
10
11
12
13
14
15
Time in HHMMSS
Tem
p oC
Site B
Site A
Temperature in Degrees Celsius
Broadway (Site A) vs Curtis Crossing (Site B)
6.6
6.65
6.7
6.75
6.8
6.85
6.9
6.95
7
7.05
7.1
Time in HHMMSS
pH
Site A
Site B
Comparison of pHBroadway ( Site A) and Curtis Crossing (Site B)
9.8
10
10.2
10.4
10.6
10.8
11
11.2
Time HHMMSS
DO
mg/
l
Site A
Site B
Comparison Of Dissolved Oxygen (mg/L) Broadway ( Site A) vs
Curtis Crossing ( Site B)
0
20
40
60
80
100
120
140
Time of Year
Load in
kg/d
ay
Broadway St.
Curtis Crossing
Broadway St. 16.95 25.72 20.67 20.67 19.264 114.9 70.6 117.6 79.1 40 23.29 62.6
Curtis Crossing 90.98 52.72 41.8 36.47 47.88 120.5 62.275 109.9 73.3 56 27.62 62.9
Fall 01 Fall 02Winter
02Spring
02Fall 03
03Winter
03Spring
03Fall 04
Winter 04
Spring 04
Fall 07 Fall 08
Fluctuations in Nitrogen Load Over a Seven Year Period
Broadway vs. Curtis Crossing
0
50
100
150
200
250
Year
Dis
char
ge in
Ft3
/sec
FebruaryMarch
October
February 88 75.5 50.8 65.7 48.1 113.6 95.6 44.5
March 114.1 237.8 75.3 157.9 65.1 162.1 39.7 133.8
October 15.4 13.6 25.2 44.8 35.2 223.5 32.2 10.9
2000 2001 2002 2003 2004 2005 2006 2007
Stream Gauge Measurements of Discharge Over An Eight Year Period Cubic Feet per
Second
• http://daac.ornl.gov/FIFE/guides/stream_flow_storm.html
0
20
40
60
80
100
120
Years
Lo
ad
kg
/ D
ay
0
5
10
15
20
25
30
35
40
45
50
dis
ch
arg
e in
cu
. ft
. / sec.
Load kg/day
Discharge in cu. Ft./sec.
Load kg/day 90.98 52.62 47.88 109.9 26.62 62.9
Discharge in cu. Ft./sec.
13.6 25.2 44.8 35.2 10.9 15.2
2001 2002 2003 2004 2007 2008
Comparison of Changes in Load vs. Changes in Discharge
At Site B, Curtis Crossing, Over a Seven Year Period
• http://daac.ornl.gov/FIFE/guides/stream_flow_storm.html
Macroinvertebrates: Site A Broadway St.
hydropsychidae61%
pelecypoda3%decapoda
3%
amphipoda24%
philopotamidae5%
libellulidae1%
corduliidae3%
2008
FBI = 4.375
2007
FBI = 4.538
Macroinvertebrates: Site B Curtis Crossing.
tipulidae2%
philopotamidae16%
elmidae8%
psephenidae9%
gammaridae7%
baetidae2%
hydropsychidae54%
pelecypoda2% FBI = 3.25
2007
FBI = 3.912
Fecal Coliform
SITE A: BROADWAY ST.
9 TO 10 COLONES PER 100 ML
SITE B: CURTIS CROSSING
4 – 6 COLONIES PER 100 ML
CONCLUSION Hanson Riverwatch: October 2008 - April 2009
In conclusion, we have found that these two river testing sites have changed very little during the time that Hanson Middle school students have been collecting data.
Even though discharge amounts fluctuate both yearly and seasonally, Nitrogen load remains significant and measureable in kilograms over the span of seven years
Dominant macroinvertebrate groups like the hydropsychidae reflect high concentrations of organic matter because of their feeding strategies.
Despite multiple signs of impairment such as higher pH, high nitrogen load and storm run-off, conditions remain good and biotic indices show fairly stable populations of a variety of macroinvertebrates.
We would like to thank our teacher; Ms. Kofton and Mr. Geoghan; our principal for making this experience possible for us this year. We would also like to thank Mrs. Levesque for driving us around. Special thanks to Kim McCoy and Dr. Curry for their tireless devotion in bringing these experiences to students and their teachers.
“I can see Mr.
Geoghegan”
“ I can see my house from here”