MBSS Site Summary for: PRMO-311-R-2002

Site Photos

Field photo showing stream conditions at site PRMO-311-R-2002-1 (Opens in a new window) Field photo showing stream conditions at site PRMO-311-R-2002-2 (Opens in a new window) Field photo showing stream conditions at site PRMO-311-R-2002-3 (Opens in a new window) Field photo showing stream conditions at site PRMO-311-R-2002-4 (Opens in a new window) Field photo showing stream conditions at site PRMO-311-R-2002-5 (Opens in a new window)

Located on LITTLE MONOCACY R 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 Poor - 2.8 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 11,960 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 2 %
Agricultural Land Use 64 %
Forested Land Use 32 %


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

Physical Stream Habitat
Instream Habitat 17/20 (Optimal)
Epifaunal Substrate 16/20 (Optimal)
Velocity/Depth Diversity 15/20 (Suboptimal)
Pool Quality
Pool Extent = 45 meters 		15/20 (Suboptimal)
Riffle Quality
Riffle Extent = 40 meters 		15/20 (Suboptimal)
Shading 84 %
Embeddedness 30 %


Stream Water Quality:
Water temperature 19.2 ° C
Dissolved oxygen (DO) 8.4 mg/L
pH (lab) 7.78
Conductivity 180 µmho/cm
Alkalinity
(acid neutralizing capacity) 		669.4 µeq/L
Dissolved organic carbon (DOC) 3.2 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 17 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Bluntnose Minnow 346
Blue Ridge Sculpin 289
Potomac Sculpin 97
Blacknose Dace 87
Central Stoneroller 72
Spotfin Shiner 68
Fantail Darter 65
Redbreast Sunfish 32
Greenside Darter 30
Green Sunfish 17
Longnose Dace 17
Rainbow Darter 15
Yellow Bullhead 12
Bluegill 11
Largemouth Bass 4
White Sucker 4
Smallmouth Bass 3
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
Cheumatopsyche Net-Spinning Caddisfly 25
Amphinemura Spring Stonefly 13
Prostoia Spring Stonefly 9
Hydropsyche Net-Spinning Caddisfly 9
Corynoneura Non-Biting Midges 6
Isonychia Slate Drake Mayfly 6
Naididae Aquatic Worm 6
Hydrobaenus Midge 6
Stenonema Flatheaded Mayfly 4
Orthocladiinae Midge 3
Simuliidae Black Fly 3
Orthocladius Non-Biting Midges 3
Oemopteryx Stonefly 3
Strophopteryx Early Brown Stonefly 2
Parametriocnemus Non-Biting Midges 2
Tanytarsini Non-Biting Midges 2
Tvetenia Non-Biting Midges 2
Simulium Black Fly 2
Corydalus Dobsonfly 1
Lype Net Tube Caddisfly 1
Rhyacophila Free-Living Caddisfly 1
Glossosoma Little Black Caddisfly 1
Oulimnius Riffle Beetle 1
Centroptilum Small Minnow Mayfly 1
Tanytarsus Non-Biting Midges 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.