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

Site Photos

Field photo showing stream conditions at site STMA-104-R-2000-01 (Opens in a new window) Field photo showing stream conditions at site STMA-104-R-2000-02 (Opens in a new window) Field photo showing stream conditions at site STMA-104-R-2000-03 (Opens in a new window)

Located on WAREHOUSE RUN in the St. Mary's River watershed, 8-digit code: 02140103.
This stream was visited in the spring on 3/1/2000 and again in the summer on 6/12/2000.

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 - 4.7 / 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 905 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 3.8 %
Agricultural Land Use 14.2 %
Forested Land Use 81.8 %


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

Physical Stream Habitat
Instream Habitat 15/20 (Suboptimal)
Epifaunal Substrate 14/20 (Suboptimal)
Velocity/Depth Diversity 12/20 (Suboptimal)
Pool Quality
Pool Extent = 55 meters 		18/20 (Optimal)
Riffle Quality
Riffle Extent = 20 meters 		9/20 (Marginal)
Shading 90 %
Embeddedness 55 %
The embeddedness, a measure of silt on the stream bottom, was 55%. This is relatively high, and may exclude some biota.


Stream Water Quality:
Water temperature 21.9 ° C
Dissolved oxygen (DO) 7.2 mg/L
pH (lab) 6.76
Conductivity 90 µmho/cm
Alkalinity
(acid neutralizing capacity) 		211.9 µeq/L
Dissolved organic carbon (DOC) 4.2 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 11 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Tessellated Darter 97
Least Brook Lamprey 89
American Eel 75
Redbreast Sunfish 13
Tadpole Madtom 12
Golden Shiner 10
Creek Chubsucker 3
Bluegill 2
Eastern Mudminnow 1
Margined Madtom 1
Pirate Perch 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Northern Green Frog
Southern Leopard Frog

Crayfish:
No crayfish noted.

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Thienemanniella Non-Biting Midges 17
Cricotopus/Orthocladius Midge 13
Rheosmittia Non-Biting Midges 11
Acerpenna Tiny Blue-Winged Olive Mayflies 8
Oulimnius Riffle Beetle 7
Parametriocnemus Non-Biting Midges 7
Tanytarsus Non-Biting Midges 6
Conchapelopia Non-Biting Midges 6
Cheumatopsyche Net-Spinning Caddisfly 5
Polypedilum Non-Biting Midges 5
Naididae Aquatic Worm 5
Eukiefferiella Non-Biting Midges 4
Zavrelimyia Non-Biting Midges 2
Corynoneura Non-Biting Midges 2
Diplocladius Non-Biting Midges 2
Psilotreta Mortarjoint Casemaker Caddisfly 2
Heleniella European Non-Biting Midge 2
Prosimulium Black Fly 2
Simulium Black Fly 2
Stegopterna Black Fly 1
Paraleptophlebia Blue Quill Mayfly 1
Neophylax Caddisfly 1
Gomphidae Clubtail Dragonfly 1
Hexatoma Crane Fly 1
Pseudolimnophila Crane Fly 1
Ormosia Cranefly 1
Chloroperlidae Green Stonefly 1
Stenacron Mayfly 1
Tubificidae Aquatic Worm 1
Anchytarsus Beetle 1
Tabanus Biting Horsefly 1
Ceratopogonidae Biting Midge 1
Procladius Non-Biting Midge 1
Leptophlebia Pronggilled Mayfly 1
Optioservus Riffle Beetle 1
Trissopelopia Non-Biting Midges 1
Psephenus Water Penny 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.