MBSS Site Summary for: BANN-103-R-2007

Site Photos

Field photo showing stream conditions at site BANN-103-R-2007-1 (Opens in a new window) Field photo showing stream conditions at site BANN-103-R-2007-2 (Opens in a new window)

Located on Big Annemessex River in the Big Annemessex River watershed, 8-digit code: 02130207.
This stream was visited in the spring on 4/23/2007 and again in the summer on 8/27/2007.

Index of Biotic Integrity (IBI) Results:

An Index of Biotic Integrity (IBI) is a scientific tool used to identify and classify stream health. An IBI associates anthropogenic influences on a stream or with biological condition in the stream, and is formulated using data developed from biosurveys.
Details on the development and application of MBSS IBIs are in this document.
Fish IBI Fair - 3.3 / 5.0
Benthic IBI Fair - 3.9 / 5.0

Land Use

Land use can provide important information for determining stream health.
(Hint: Screen readers will announce definitions; mouse users can hover over dotted text.)
Catchment area 2,162 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 1 %
Agricultural Land Use 39.9 %
Forested Land Use 57.1 %


Stream showing woody debris, logs, and rocky substrate.
An example of woody debris in a stream.

Physical Stream Habitat
Instream Habitat 12/20 (Suboptimal)
Epifaunal Substrate 11/20 (Suboptimal)
Velocity/Depth Diversity 6/20 (Marginal)
Pool Quality
Pool Extent = 75 meters 		11/20 (Suboptimal)
Riffle Quality
Riffle Extent = 0 meters 		0/20 (Poor)
Shading 75 %
Embeddedness 100 %
The embeddedness, a measure of silt on the stream bottom, was 100%. This is very high, and may adversely affect biotic communities.


Stream Water Quality:
Water temperature 24.7 ° C
Dissolved oxygen (DO) 3.5 mg/L
Dissolved oxygen levels measured in the stream were very low (3.5 mg/L). Many fishes and other aquatic animals cannot tolerate low levels of oxygen in the water.
pH (lab) 5.82
Conductivity 195 µmho/cm
Alkalinity
(acid neutralizing capacity) 		85.2 µeq/L
Dissolved organic carbon (DOC) 17.825 mg/L

Biological Stream Condition:

Surveys of the organisms living within a stream can give indications of stream health. Species richness, or the number of different species present, as well as indicator species (species whose presence, absence or abundance can serve as a measure of environmental conditions) are informative for stream health. 		Close-up of a mayfly indicator species.

Fish Survey Results:
The following 9 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Eastern Mosquitofish 170
Golden Shiner 147
Banded Killifish 74
Brown Bullhead 15
American Eel 11
Pumpkinseed 9
Redfin Pickerel 8
Eastern Mudminnow 7
Pirate Perch 5
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Fowler's Toad
Gray Treefrog
Green Treefrog
Northern Green Frog

Crayfish:
Orconectes
Procambarus clarkii

Exotic Plants:
Bamboo
Japanese Honeysuckle
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Caecidotea Isopod 38
Hydroporus Water Beetle 17
Tribelos Non-Biting Midges 14
Potthastia Non-Biting Midges 5
Polypedilum Non-Biting Midges 4
Dubiraphia Riffle Beetle 3
Chironomini Non-Biting Midge 3
Dicrotendipes Non-Biting Midges 3
Scirtidae Marsh Beetle 2
Caenis Mayfly 2
Orthocladiinae Midge 2
Crangonyx Amphipod 2
Lepidoptera Aquatic Moth 2
Bezzia Biting Midge 1
Simulium Black Fly 1
Calopteryx Damselfly 1
Musculium Fingernail Clam 1
Oecetis Long-Horned Caddisfly 1
Orthocladius Non-Biting Midges 1
Paratanytarsus Non-Biting Midges 1
Cricotopus Non-Biting Midges 1
Tanytarsus Non-Biting Midges 1
Thienemannimyia group Non-Biting Midges 1
Corixidae Water Boatman 1
Kick net sampling for macroinvertebrates.
Sampling with a kick net.

Information disclaimer: The information and data on this page is for guidance and general planning purposes only. It should not be used to make decisions on specific matters.