MBSS Site Summary for: MATT-117-R-2000

Site Photos

Field photo showing stream conditions at site MATT-117-R-2000-01 (Opens in a new window)

Located on MATTAWOMAN CR UT4 in the Mattawoman Creek watershed, 8-digit code: 02140111.
This stream was visited in the spring on 3/9/2000 and again in the summer on 6/21/2000.

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 Good - 4.0 / 5.0
Benthic IBI Good - 4.4 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 101 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 0 %
Agricultural Land Use 0 %
Forested Land Use 100 %


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

Physical Stream Habitat
Instream Habitat 8/20 (Marginal)
Epifaunal Substrate 6/20 (Marginal)
Velocity/Depth Diversity 7/20 (Marginal)
Pool Quality
Pool Extent = 60 meters 		6/20 (Marginal)
Riffle Quality
Riffle Extent = 20 meters 		6/20 (Marginal)
Shading 95 %
Embeddedness 85 %
The embeddedness, a measure of silt on the stream bottom, was 85%. This is relatively high, and may exclude some biota.


Stream Water Quality:
Water temperature 19.1 ° C
Dissolved oxygen (DO) 6.9 mg/L
pH (lab) 5.66
Conductivity 20 µmho/cm
Alkalinity
(acid neutralizing capacity) 		57.4 µeq/L
Dissolved organic carbon (DOC) 1.8 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 4 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 86
Least Brook Lamprey 51
Eastern Mudminnow 21
American Eel 2
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Dusky Salamander
Northern Green Frog
Northern Red Salamander
Northern Two-Lined Salamander
Pickerel Frog

Crayfish:
No crayfish noted.

Exotic Plants:
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Leuctridae Rolledwinged Stonefly 79
Lepidostoma Little Brown Sedge Caddisfly 7
Diplectrona Net-Spinning Caddisfly 7
Simuliidae Black Fly 6
Oulimnius Riffle Beetle 6
Synurella Amphipod 5
Simulium Black Fly 4
Naididae Aquatic Worm 3
Stenelmis Beetle 2
Stegopterna Black Fly 2
Dicranota Hairy-Eyed Cranefly 2
Caecidotea Isopod 2
Collembola Springtail 2
Dolophilodes Medium Evening Sedge Caddisfly 2
Conchapelopia Non-Biting Midges 2
Corynoneura Non-Biting Midges 1
Eukiefferiella Non-Biting Midges 1
Tanypodinae Non-Biting Midges 1
Tanytarsus Non-Biting Midges 1
Thienemanniella Non-Biting Midges 1
Habrophlebia Prong-Gilled Mayfly 1
Cricotopus/Orthocladius Midge 1
Eurylophella Mayfly 1
Ablabesmyia Non-Biting Midge 1
Unniella Non-Biting Midge 1
Apsectrotanypus Non-Biting Midges 1
Gomphidae Clubtail Dragonfly 1
Ceratopogon Biting Midge 1
Prosimulium Black Fly 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.