MBSS Site Summary for: STMA-119-R-2017

Site Photos

Field photo showing stream conditions at site STMA-119-R-2017-MidpointDownstream (Opens in a new window) Field photo showing stream conditions at site STMA-119-R-2017-MidpointUpstream (Opens in a new window)

Located on Broom Creek in the St. Mary's River watershed, 8-digit code: 02140103.
This stream was visited in the spring on 3/8/2017 and again in the summer on 6/14/2017.

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 - 1.7 / 5.0
Benthic IBI Fair - 3.6 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 57 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 3.6 %
Agricultural Land Use 31.1 %
Forested Land Use 54.6 %


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

Physical Stream Habitat
Instream Habitat 6/20 (Marginal)
Epifaunal Substrate 12/20 (Suboptimal)
Velocity/Depth Diversity 6/20 (Marginal)
Pool Quality
Pool Extent = 61 meters 		8/20 (Marginal)
Riffle Quality
Riffle Extent = 14 meters 		5/20 (Poor)
Shading 80 %
Embeddedness 20 %


Stream Water Quality:
pH (lab) 6.83
Alkalinity
(acid neutralizing capacity) 		262.2 µeq/L
Dissolved organic carbon (DOC) 1.5974 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 1 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
American Eel 7
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
No amphibians and reptiles noted.

Crayfish:
No crayfish noted.

Exotic Plants:
No Exotic Plants Observed
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
CORYNONEURA Non-Biting Midges 22
TUBIFICIDAE Aquatic Worm 12
NAIDIDAE Aquatic Worm 11
ZAVRELIMYIA Non-Biting Midges 7
LYPE Net Tube Caddisfly 6
SYNURELLA Amphipod 5
TVETENIA Non-Biting Midges 4
DIPLOCLADIUS Non-Biting Midges 4
PARAMETRIOCNEMUS Non-Biting Midges 4
DYTISCIDAE Predaceous Diving Beetle 3
SIMULIUM Black Fly 3
CAECIDOTEA Isopod 3
LEPIDOSTOMA Little Brown Sedge Caddisfly 2
ANCHYTARSUS Beetle 2
PARACLADOPELMA Non-Biting Midge 2
SPHAEROMIAS 2
STEMPELLINELLA Non-Biting Midges 2
TANYPODINAE Non-Biting Midges 2
POLYPEDILUM Non-Biting Midges 1
MICROPSECTRA Non-Biting Midges 1
NEOPOROUS Predaceous Diving Beetle 1
LEUCTRIDAE Rolledwinged Stonefly 1
BAETIDAE Small Minnow Mayfly 1
CORDULEGASTER Spiketail Dragonfly 1
POLYCENTROPUS Tube Maker Caddisfly 1
HYDROBIUS Water Scavenger Beetle 1
PISIDIIDAE Pill Clam 1
SAETHERIA 1
ENCHYTRAEIDAE Aquatic Worm 1
STEGOPTERNA Black Fly 1
CHIMARRA Fingernet Caddisfly 1
PTILOSTOMIS Giant Casemaker Caddisfly 1
CHAETOCLADIUS Non-Biting Midges 1
DIPLECTRONA Net-Spinning Caddisfly 1
ODONTOMESA Non-Biting Midge 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.