MBSS Site Summary for: PRMO-323-R-2002

Site Photos

Field photo showing stream conditions at site PRMO-323-R-2002-1 (Opens in a new window) Field photo showing stream conditions at site PRMO-323-R-2002-2 (Opens in a new window) Field photo showing stream conditions at site PRMO-323-R-2002-3 (Opens in a new window) Field photo showing stream conditions at site PRMO-323-R-2002-4 (Opens in a new window) Field photo showing stream conditions at site PRMO-323-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 3/6/2002 and again in the summer on 6/11/2002.

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 5,619 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 75 %
Forested Land Use 23 %


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 14/20 (Suboptimal)
Pool Quality
Pool Extent = 60 meters 		15/20 (Suboptimal)
Riffle Quality
Riffle Extent = 18 meters 		15/20 (Suboptimal)
Shading 35 %
Embeddedness 40 %


Stream Water Quality:
Water temperature 20 ° C
Dissolved oxygen (DO) 9.9 mg/L
pH (lab) 7.44
Conductivity 140 µmho/cm
Alkalinity
(acid neutralizing capacity) 		628.2 µeq/L
Dissolved organic carbon (DOC) 1.8 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 20 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Central Stoneroller 150
Bluntnose Minnow 148
Fantail Darter 92
Blacknose Dace 86
Rosyside Dace 82
Blue Ridge Sculpin 45
Potomac Sculpin 45
Creek Chub 27
White Sucker 24
Common Shiner 19
Redbreast Sunfish 15
Longnose Dace 12
Bluegill 10
Creek Chubsucker 8
Greenside Darter 6
Rock Bass 6
Green Sunfish 4
Largemouth Bass 3
Tessellated Darter 2
Northern Hogsucker 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Eastern American Toad

Crayfish:
No crayfish noted.

Exotic Plants:
Canada Thistle
Japanese Honeysuckle
Mile-A-Minute
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Simulium Black Fly 19
Orthocladius Non-Biting Midges 13
Prosimulium Black Fly 12
Tvetenia Non-Biting Midges 6
Amphinemura Spring Stonefly 6
Centroptilum Small Minnow Mayfly 4
Corynoneura Non-Biting Midges 4
Orthocladiinae Midge 3
Neophylax Caddisfly 3
Chimarra Fingernet Caddisfly 3
Microtendipes Non-Biting Midges 3
Isonychia Slate Drake Mayfly 2
Ephemerellidae Spiny Crawler Mayfly 2
Polycentropus Tube Maker Caddisfly 2
Naididae Aquatic Worm 2
Brillia Non-Biting Midges 2
Dicrotendipes Non-Biting Midges 2
Paratanytarsus Non-Biting Midges 1
Rheosmittia Non-Biting Midges 1
Sympotthastia Non-Biting Midges 1
Tanypodinae Non-Biting Midges 1
Tanytarsus Non-Biting Midges 1
Crangonyx Amphipod 1
Strophopteryx Early Brown Stonefly 1
Heptageniidae Flathead Mayfly 1
Glossosoma Little Black Caddisfly 1
Hydrobaenus Midge 1
Nanocladius 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.