MBSS Site Summary for: STMA-110-R-2000

Site Photos

Field photo showing stream conditions at site STMA-110-R-2000-01 (Opens in a new window) Field photo showing stream conditions at site STMA-110-R-2000-02 (Opens in a new window) Field photo showing stream conditions at site STMA-110-R-2000-03 (Opens in a new window)

Located on BROOM CR in the St. Mary's River watershed, 8-digit code: 02140103.
This stream was visited in the spring on 3/2/2000 and again in the summer on 6/5/2000.

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 - 2.7 / 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 75 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 0 %
Agricultural Land Use 23.7 %
Forested Land Use 75.8 %


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 11/20 (Suboptimal)
Velocity/Depth Diversity 11/20 (Suboptimal)
Pool Quality
Pool Extent = 65 meters 		13/20 (Suboptimal)
Riffle Quality
Riffle Extent = 15 meters 		8/20 (Marginal)
Shading 95 %
Embeddedness 30 %


Stream Water Quality:
Water temperature 16.4 ° C
Dissolved oxygen (DO) 6.9 mg/L
pH (lab) 6.32
Conductivity 110 µmho/cm
Alkalinity
(acid neutralizing capacity) 		178.8 µeq/L
Dissolved organic carbon (DOC) 2.3 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 5 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Eastern Mudminnow 74
American Eel 14
Brown Bullhead 9
Creek Chubsucker 8
Golden Shiner 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Eastern Box Turtle
Northern Two-Lined Salamander

Crayfish:
No crayfish noted.

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Naididae Aquatic Worm 32
Stegopterna Black Fly 13
Dolophilodes Medium Evening Sedge Caddisfly 10
Leptophlebiidae Pronggilled Mayfly 10
Polypedilum Non-Biting Midges 7
Parametriocnemus Non-Biting Midges 6
Diplectrona Net-Spinning Caddisfly 6
Paraleptophlebia Blue Quill Mayfly 5
Habrophlebia Prong-Gilled Mayfly 5
Trissopelopia Non-Biting Midges 3
Eukiefferiella Non-Biting Midges 3
Chimarra Fingernet Caddisfly 3
Eurylophella Mayfly 2
Orthocladiinae Midge 2
Conchapelopia Non-Biting Midges 2
Gomphidae Clubtail Dragonfly 2
Isotomurus Elongate-Bodied Springtail 2
Tanytarsus Non-Biting Midges 2
Rheosmittia Non-Biting Midges 1
Oulimnius Riffle Beetle 1
Acerpenna Tiny Blue-Winged Olive Mayflies 1
Leptophlebia Pronggilled Mayfly 1
Leuctra  Rolled-Winged Stonefly 1
Anchytarsus Beetle 1
Hexatoma Crane Fly 1
Diplocladius Non-Biting Midges 1
Nigronia Megaloptera (Dark Fishfly) 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.