MBSS Site Summary for: PRMO-110-R-2002

Site Photos

Field photo showing stream conditions at site PRMO-110-R-2002-1 (Opens in a new window) Field photo showing stream conditions at site PRMO-110-R-2002-2 (Opens in a new window)

Located on BROAD RUN in the Potomac River MO Cnty watershed, 8-digit code: 02140202.
This stream was visited in the spring on 3/4/2002 and again in the summer on 6/10/2002.

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 Good - 4.7 / 5.0
Benthic IBI Fair - 3.5 / 5.0

Land Use

Land use can provide important information for determining stream health.
(Hint: Screen readers will announce definitions; mouse users can hover over dotted text.)
Catchment area 1,576 acres Cows standing in a stream at a site with high agricultural land use. Cows survey the sampling procedure at this extreme example of a highly agriculturalized site.
Urban Land Use 1 %
Agricultural Land Use 71 %
Forested Land Use 26 %


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 14/20 (Suboptimal)
Velocity/Depth Diversity 13/20 (Suboptimal)
Pool Quality
Pool Extent = 65 meters 		10/20 (Marginal)
Riffle Quality
Riffle Extent = 12 meters 		11/20 (Suboptimal)
Shading 90 %
Embeddedness 30 %


Stream Water Quality:
Water temperature 23 ° C
Dissolved oxygen (DO) 9.3 mg/L
pH (lab) 7.4
Conductivity 200 µmho/cm
Alkalinity
(acid neutralizing capacity) 		550.1 µeq/L
Dissolved organic carbon (DOC) 7.7 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 13 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Potomac Sculpin 317
Blacknose Dace 96
Fantail Darter 93
Creek Chub 66
Green Sunfish 6
Bluntnose Minnow 3
Bluegill 2
Redbreast Sunfish 2
Eastern Mudminnow 1
Greenside Darter 1
Largemouth Bass 1
Rosyside Dace 1
Yellow Bullhead 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
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
Chimarra Fingernet Caddisfly 24
Conchapelopia Non-Biting Midges 12
Diphetor Mayfly 9
Orthocladius Non-Biting Midges 9
Parametriocnemus Non-Biting Midges 7
Neophylax Caddisfly 7
Psephenus Water Penny 7
Tvetenia Non-Biting Midges 5
Paracapnia Small Winter Stonefly 3
Amphinemura Spring Stonefly 3
Micropsectra Non-Biting Midges 3
Hemerodromia Tiny Fly 2
Stenelmis Beetle 2
Stempellinella Non-Biting Midges 2
Tanytarsini Non-Biting Midges 2
Thienemannimyia group Non-Biting Midges 2
Orthocladiinae Midge 2
Cheumatopsyche Net-Spinning Caddisfly 2
Hydropsyche Net-Spinning Caddisfly 1
Dolophilodes Medium Evening Sedge Caddisfly 1
Simuliidae Black Fly 1
Gomphidae Clubtail Dragonfly 1
Hexatoma Crane Fly 1
Stenonema Flatheaded Mayfly 1
Rhyacophila Free-Living Caddisfly 1
Clioperla Green-Winged Stonefly 1
Gordiidae Horsehair Worm 1
Polycentropus Tube Maker Caddisfly 1
Acerpenna Tiny Blue-Winged Olive Mayflies 1
Curculionidae Weevil 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.