Section 1
Background
In addition to the mainstem sampling locations, 16 major tributaries have been
identified within the study area. Impacts of the tributary sub-basins will be evaluated
as part of this field sampling program by collecting water quality samples at the
mouths of these key tributaries. Table 1-1 lists the tributaries to the mainstem Upper
Merrimack and Pemigewasset River that are to be included in the model along, with
the location of the confluence with the mainstem.
Table 1-1: Key Tributaries to the Upper Merrimack and Pemigewasset Rivers
Tributary
East Branch Pemigewasset
Mad River
Baker River
Squam River
Newfound River
Smith River
Chance Pond Brook
Winnipesaukee River
Contoocook River
Soucook River
Suncook River
Piscataquog River
Cohas Brook
Souhegan River
Nashua River
Salmon Brook
Location of Confluence
Woodstock, NH
Campton, NH
Plymouth, NH
New Hampton, NH
Bristol, NH
Bristol/Hill, NH
Franklin, NH
Franklin, NH
Boscawen/Concord, NH
Concord/Pembroke, NH
Allenstown/Pembroke, NH
Manchester, NH
Manchester, NH
Merrimack, NH
Nashua, NH
Nashua, NH
Figure 1-1 shows the Pemigewasset and Merrimack River study area and watershed.
1-4
Streamflow Gages
E. P
Merrimack River
and Tributaries
e
ew asset Riv er
#
PEMIGEWASSET RIVER
AT WOODSTOCK, NH
er R
M
B
ak
#! Woodstock
iv e
r
ad
Plymouth
#!
PEMIGEWASSET RIVER
AT PLYMOUTH, NH
R
r
ve r
#
ve
i
Tributary
er
set R iv
ig
#
e wa s
m
Mainstem Tracking
Pemig
#
Ri
k ee
#
Riv e r
s au
Sm
it h
R iv
er
Sq
ua m
ip
e
n
Franklin !Win
#
rri
o o k Ri v e
r
Me
er
#
!
oo k
Concord
nc
Su
uo
v er
Piscat aq
g Ri
ok R i
ve r
Ri v
#
Souc
ck
ma
#
Ri
MERRIMACK RIVER
AT FRANKLIN JUNCTION, NH
#
#
Co n
t o o co
ve r
!
Manchester
#
MERRIMACK AT GOFFS FALLS,
BELOW MANCHESTER, NH
an Rive r
So
uh
eg
#
r
Nashua
Bk
Me r r
Upper Merrimack
and Pemigewasset River Study
0
\\FT681C1 C:\Projects\merrimack\Fig1-1_Study_Area_Map JDN 09282010
5
10
20
Miles
im
k Ri
ac
Sa l mo n
N
as
v
er
h ua R
iv e
!
Figure 1-1
Study Area Map