Fish Results & Data

Students participating in Mass Audubon’s Salt Marsh Science Project are helping collect data on fish. Many sites that they are investigating are on sites where roads have been blocking the flow of the incoming tide. To investigate whether these “tidal restrictions” are affecting fish, minnow traps are set on both sides: upstream and downstream. Middle School and High School students are investigating sites on the North Shore of Massachusetts. 

Our Questions include:

  • Where is there a greater number of fish?
  • Where is biodiversity greater?
  • Is the size of fish affected by their location: upstream or downstream of a tidal restriction.


Los estudiantes que participan en Salt Marsh Proyecto de Ciencias de Mass Audubon ayudan a recopilar datos sobre los peces. Muchos sitios que se están investigando son los sitios donde las carreteras han estado bloqueando el flujo de la marea entrante. Para investigar si estas "restricciones de marea" están afectando a los peces, las trampas minnow se establecen en ambos lados: aguas arriba y aguas abajo. Escuela y los estudiantes de secundaria están investigando sitios en la costa norte de Massachusetts.

Nuestras preguntas son:

¿Dónde hay un mayor número de peces?
¿Dónde está la biodiversidad más grande?
¿El tamaño de los peces afectados por su ubicación: aguas arriba o aguas abajo de una restricción de marea.


View analysis resources >


With the help participating students, we have been collecting data on fish as it relates to salt marshes in coastal Massachusetts since 1996. Please note that not all sites are monitored each year—the date range indicates the start date and the most recent year data was collected. 


Years Monitored

Participating Schools & Groups

Restricted? Restored?


Graphs Only

Graphs & Database in Excel

Boston, MA, Thompson Island 2006-2008 Outward Bound, Wellesley Rocks impede tidal flow. Removed August 2007.
thommap 328.11 kB
thommin 13.59 kB
thommin 15.93 kB
Danvers, MA, Behind Mass General North Shore, (Formerly Osram Sylvania) 1998-2014 Holten Richmond Middle School, Essex North Shore Agricultural & Technical High School, Danvers Tidal restriction and berm. Not restored. Map
danvmin 527.91 kB
danvmin 93.90 kB
Dorchester, Milton MA, Neponset Marsh 2004-2007 UMass Boston Filled marsh. Fill removal completed April 2005. Map
nepomin 14.17 kB
nepomin 7.71 kB
East Boston, MA, Belle Isle Marsh 2005 Excel Academy Charter School, East Boston No Map
belimin 17.33 kB
belimin 18.53 kB
Essex, MA, Conomo Point Road 1998-2008, Manchester Essex High School, Essex Elementary and Middle School Tidal Restriction restored November 2000
essemap 311.54 kB
essemin 361.76 kB
essemin 100.78 kB
Gloucester, MA, Mill Pond 1998-2015 O'Maley Innovation Middle School in Gloucester Tidal restriction. Site flooded when board placed on tidegates spring 2003, killing marsh plants. Tide gates opened beginning spring 2004.
gloumap 191.80 kB
gloumin 222.98 kB
gloumin 217.85 kB
Gloucester, MA, Wingersheek Beach 2006 Essex North Shore Agriculture & Technical High School, Maritime Heritage Berm Map
wingmin 10.20 kB
wingmin 10.55 kB
Gloucester, MA, Eastern Point 2000-2015 Essex North Shore Agricultural & Technical High School, Natick Homeschoolers, St. Mel's School in Gloucester Tidal restriction restored November 2003.
glepmap 862.93 kB
glepmin 305.73 kB
glepmin 113.51 kB
Ipswich, MA, Littleneck Road 2004, 2007 Ipswich High School Tidal Restriction; culvert collapsed in spring 2000, ponding killed marsh plants. New culvert put in Spring 2001.
ips2map 815.46 kB
ips2min 8.21 kB
ips2min 14.67 kB
Ipswich, MA, Argilla Road 1997 Mass Audubon and NMFS Scientists Tidal Restriction Restored Fall 1998 Map Not Available Not Available
Ipswich, MA, Cedar Point 1999-2001, 2004, 2009-2010 Stoneridge Montessori School, Beverly, The Proctor School (Topsfield) Tidal Restriction Phase 1 Restored Spring 2000
iptpmap 693.26 kB
iptpmin 100.50 kB
iptpmin 56.63 kB
Ipswich, MA, Littleneck Road 2004-2007 Ipswich High School (site 2) Tidal Restriction; culvert collapsed in spring 2000, ponding killed marsh plants. New culvert put in Spring 2001. Map
ips2min 8.21 kB
ips2min 14.67 kB
Ipswich, MA, Town Farm Road 2000, 2007 Ipswich High School Tidal Restriction restored Spring 2005
ips1map 1.04 MB
ips1min 11.97 kB
ips1min 33.65 kB
Newburyport, MA, Joppa Flats 1998-2015 Newburyport: Rupert A. Nock Middle School, River Valley Charter School Fill removal restoration and panne creation 1999. Small tidal restriction not restored.
nbptmap 525.49 kB
nbptmin 220.40 kB
nbptmin 276.59 kB
Revere, MA 2000-2001 Revere High School  
reveremap 733.93 kB
reveremin 10.73 kB
revemin 144.18 kB
Rockport, MA, Saratoga Creek & Seaview Street 1998-2015 Rockport Middle School Storm drain sediments removed, panne creation Spring 1999. Seaview St. tidal restriction restored Fall 2003.
rockmap 792.32 kB
rockmin 179.63 kB
rockmin 64.62 kB
Rowley, MA, Batchelder's Landing 1996-2007, 2015 Pine Grove School in Rowley Unrestricted site (reference site)
rowlmap 653.41 kB
rowlmin 14.96 kB
rowlmin 52.17 kB
Rowley, MA, Parker River National Wildlife Refuge: North Pool 2001-2015 River Valley Charter School, Newbury Elementary School, Rupert A. Nock Middle School, Northern Essex Community College, Gulf of Maine Institute Restricted. May be restored in the future.
refumap 858.74 kB
refumin 391.36 kB
refumin 201.10 kB
Salem, MA, Forest River 2003-2015 Collins Middle School in Salem Restricted. Some Phragmites removed January 2003.
salmmap 717.67 kB
salmmin 423.30 kB
salmmin 180.95 kB
Salisbury, MA, Old County Road 2001 only Salisbury Elementary School Restricted  
socrmin 8.99 kB
socrmin 4.61 kB
Salisbury, MA, Railroad bed off Mudnock Road (Town Creek) 1998-2002, 2010 Salisbury Memorial Elementary School Tidal Restriction Transects are downstream of restriction. Downstream transects flooded by closed tidegate killing downstream plants in spring 2004. Site washed out in spring 2005.
salimap 205.60 kB
salimin 46.55 kB
salimin 53.36 kB
Wellfleet, MA, Herring River 2001-2002 Cape Cod Lighthouse Charter School Restricted Map
whermin 11.06 kB
whermin 6.68 kB
Wellfleet, MA, Wellfleet Bay Wildlife Sanctuary 1999 Mass Audubon Unrestricted Map
welfmin 9.45 kB
welfmin 31.44 kB


Analysis Resources

Changes in Salt Marsh Vegetation, Phragmites Australis, and Nekton in Response to Increased Tidal Flushing in a New England Salt Marsh

Get Involved

If you'd like to collect data in your community contact us