MBSS Site Summary for: PRMO-112-R-2002

Site Photos

Located on GREEN BRIAR BR in the Potomac River MO Cnty watershed, 8-digit code: 02140202.
This stream was visited in the spring on 3/5/2002 and again in the summer on 6/12/2002.

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 Fair - 3.5 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 853 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 24 %
Agricultural Land Use 23 %
Forested Land Use 49 %


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

Physical Stream Habitat
Instream Habitat 16/20 (Optimal)
Epifaunal Substrate 13/20 (Suboptimal)
Velocity/Depth Diversity 10/20 (Marginal)
Pool Quality
Pool Extent = 40 meters 		15/20 (Suboptimal)
Riffle Quality
Riffle Extent = 35 meters 		10/20 (Marginal)
Shading 85 %
Embeddedness 45 %


Stream Water Quality:
Water temperature 20.3 ° C
Dissolved oxygen (DO) 6.3 mg/L
pH (lab) 7.81
Conductivity 440 µmho/cm
Alkalinity
(acid neutralizing capacity) 		3069 µeq/L
Dissolved organic carbon (DOC) 4.7 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 12 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 232
Fantail Darter 112
Creek Chub 49
Rosyside Dace 39
Potomac Sculpin 23
White Sucker 16
Bluegill 12
Green Sunfish 9
Creek Chubsucker 3
Bluntnose Minnow 2
Silverjaw Minnow 2
Pumpkinseed 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Eastern Snapping Turtle
Northern Green Frog
Northern Two-Lined Salamander

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Honeysuckle
Japanese Stiltgrass
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Corynoneura Non-Biting Midges 14
Baetis Blue-Winged Olive Mayfly 12
Chimarra Fingernet Caddisfly 11
Hydrobaenus Midge 11
Centroptilum Small Minnow Mayfly 9
Tvetenia Non-Biting Midges 8
Stempellinella Non-Biting Midges 5
Gammarus Amphipod 4
Diplocladius Non-Biting Midges 4
Microtendipes Non-Biting Midges 3
Orthocladius Non-Biting Midges 3
Naididae Aquatic Worm 3
Conchapelopia Non-Biting Midges 3
Capniidae Small Winter Stonefly 3
Optioservus Riffle Beetle 2
Sympotthastia Non-Biting Midges 2
Tanypodinae Non-Biting Midges 2
Tanytarsus Non-Biting Midges 2
Stenonema Flatheaded Mayfly 2
Parametriocnemus Non-Biting Midges 2
Paratanytarsus Non-Biting Midges 2
Cheumatopsyche Net-Spinning Caddisfly 2
Ablabesmyia Non-Biting Midge 2
Menetus Air Breathing Freshwater Snail 1
Hydropsyche Net-Spinning Caddisfly 1
Phaenopsectra Non-Biting Midges 1
Girardia Freshwater Flatworm 1
Eurylophella Mayfly 1
Stenelmis Beetle 1
Coenagrionidae Narrowwinged Damselfly 1
Dubiraphia Riffle Beetle 1
Hydroporus Water 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.