MBSS Site Summary for: STMA-106-R-2003

Site Photos

Field photo showing stream conditions at site STMA-106-R-2003-1 (Opens in a new window) Field photo showing stream conditions at site STMA-106-R-2003-2 (Opens in a new window) Field photo showing stream conditions at site STMA-106-R-2003-3 (Opens in a new window)

Located on JARBOESVILLE RUN UT1 in the St. Mary's River watershed, 8-digit code: 02140103.
This stream was visited in the spring on 3/13/2003 and again in the summer on 6/9/2003.

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 - 3.0 / 5.0
Benthic IBI Poor - 2.7 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 724 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 27 %
Agricultural Land Use 15 %
Forested Land Use 58 %


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

Physical Stream Habitat
Instream Habitat 13/20 (Suboptimal)
Epifaunal Substrate 14/20 (Suboptimal)
Velocity/Depth Diversity 11/20 (Suboptimal)
Pool Quality
Pool Extent = 57 meters 		11/20 (Suboptimal)
Riffle Quality
Riffle Extent = 18 meters 		14/20 (Suboptimal)
Shading 85 %
Embeddedness 35 %


Stream Water Quality:
Water temperature 18.9 ° C
Dissolved oxygen (DO) 7 mg/L
pH (lab) 5.63
Conductivity 60 µmho/cm
Alkalinity
(acid neutralizing capacity) 		73.4 µeq/L
Dissolved organic carbon (DOC) 2.4 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 8 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Eastern Mudminnow 89
Pumpkinseed 15
American Eel 8
Least Brook Lamprey 7
Tessellated Darter 6
Golden Shiner 4
Swallowtail Shiner 4
Pirate Perch 2
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Southern Leopard Frog

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Stiltgrass
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Lumbriculidae Worm 62
Naididae Aquatic Worm 33
Oulimnius Riffle Beetle 7
Cheumatopsyche Net-Spinning Caddisfly 6
Stenelmis Beetle 3
Hexatoma Crane Fly 2
Diplectrona Net-Spinning Caddisfly 2
Pisidiidae Pill Clam 2
Synurella Amphipod 1
Tubificidae Aquatic Worm 1
Conchapelopia Non-Biting Midges 1
Microtendipes Non-Biting Midges 1
Parametriocnemus Non-Biting Midges 1
Polypedilum Non-Biting Midges 1
Chrysops Deerfly 1
Ancylidae Limpet 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.