MBSS Site Summary for: MATT-104-R-2000

Site Photos

Field photo showing stream conditions at site MATT-104-R-2000-01 (Opens in a new window) Field photo showing stream conditions at site MATT-104-R-2000-02 (Opens in a new window)

Located on MATTAWOMAN CR UT3 in the Mattawoman Creek watershed, 8-digit code: 02140111.
This stream was visited in the spring on 3/7/2000 and again in the summer on 6/19/2000.

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 Poor - 1.3 / 5.0
Benthic IBI Good - 5.0 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 805 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 6.3 %
Agricultural Land Use 17.7 %
Forested Land Use 75.9 %


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

Physical Stream Habitat
Instream Habitat 11/20 (Suboptimal)
Epifaunal Substrate 9/20 (Marginal)
Velocity/Depth Diversity 6/20 (Marginal)
Pool Quality
Pool Extent = 65 meters 		8/20 (Marginal)
Riffle Quality
Riffle Extent = 12 meters 		6/20 (Marginal)
Shading 90 %
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 20.5 ° C
Dissolved oxygen (DO) 6.8 mg/L
pH (lab) 6.61
Conductivity 70 µmho/cm
Alkalinity
(acid neutralizing capacity) 		120.5 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 6 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Eastern Mudminnow 48
American Eel 3
Blacknose Dace 3
Creek Chub 1
Green Sunfish 1
Rosyside Dace 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
No amphibians and reptiles noted.

Crayfish:
No crayfish noted.

Exotic Plants:
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Amphinemura Spring Stonefly 23
Caecidotea Isopod 13
Cricotopus/Orthocladius Midge 13
Siphlonurus Gray Drake Mayfly 9
Orthocladiinae A Non-Biting Midges 5
Nemouridae Nemourid Stonefly 5
Prosimulium Black Fly 5
Zavrelimyia Non-Biting Midges 5
Perlodidae Perlodid Stonefly 4
Hydroporus Water Beetle 4
Ameletus Combmouthed Minnow Mayfly 4
Clioperla Green-Winged Stonefly 3
Isoperla Stripetail Stonefly 3
Diplocladius Non-Biting Midges 2
Tanypodinae Non-Biting Midges 2
Larsia Non-Biting Midge 1
Conchapelopia Non-Biting Midges 1
Tipula Crane Fly 1
Paratendipes European Non-Biting Midge 1
Ptilostomis Giant Casemaker Caddisfly 1
Stegopterna Black Fly 1
Menetus Air Breathing Freshwater Snail 1
Helichus Beetle 1
Ephemerella Sulphur Mayfly 1
Leptophlebiidae Pronggilled Mayfly 1
Leuctridae Rolledwinged Stonefly 1
Capniidae Small Winter Stonefly 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.