MBSS Site Summary for: PRMO-206-X-2015


Located on GREENBRIAR BRANCH in the Potomac River MO Cnty watershed, 8-digit code: 02140202.
This stream was visited in the spring on 4/28/2015 and again in the summer on 8/28/2015.

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 - 3.7 / 5.0
Benthic IBI Poor - 2.5 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 768 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 32.9 %
Agricultural Land Use 1.8 %
Forested Land Use 48.8 %


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

Physical Stream Habitat
Instream Habitat 9/20 (Marginal)
Epifaunal Substrate 8/20 (Marginal)
Velocity/Depth Diversity 11/20 (Suboptimal)
Pool Quality
Pool Extent = 67 meters 		11/20 (Suboptimal)
Riffle Quality
Riffle Extent = 8 meters 		6/20 (Marginal)
Shading 55 %
Embeddedness 40 %


Stream Water Quality:
No water quality measurements available for this site.

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
Blacknose Dace 479
Central Stoneroller 146
Creek Chub 129
Green Sunfish 111
Rosyside Dace 96
Fantail Darter 83
Bluntnose Minnow 67
Potomac Sculpin 20
White Sucker 17
Bluegill 2
Largemouth Bass 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Eastern Snapping Turtle
Wood Frog

Crayfish:
Orconectes virilis

Exotic Plants:
English Ivy
Japanese Barberry
Japanese Honeysuckle
Japanese Stiltgrass
Multiflora Rose
Wineberry
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Gammarus Amphipod 45
Orthocladius Non-Biting Midges 21
Cheumatopsyche Net-Spinning Caddisfly 10
Amphinemura Spring Stonefly 7
Psephenus Water Penny 4
Tanytarsus Non-Biting Midges 3
Optioservus Riffle Beetle 3
Caenis Mayfly 3
Simulium Black Fly 3
Stenonema Flatheaded Mayfly 3
Tipula Crane Fly 2
Hydrobaenus Midge 2
Dicrotendipes Non-Biting Midges 2
Oulimnius Riffle Beetle 2
Rheocricotopus Non-Biting Midges 2
Chimarra Fingernet Caddisfly 2
Rheotanytarsus Non-Biting Midges 1
Polypedilum Non-Biting Midges 1
Orthocladiinae Midge 1
Diphetor Mayfly 1
Calopteryx Damselfly 1
Isotomurus Elongate-Bodied Springtail 1
Prostoma Freshwater Nemertean (Ribbon Worm) 1
Gomphidae Clubtail Dragonfly 1
Stenelmis Beetle 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.