MBSS Site Summary for: PRMO-115-R-2002


Located on LITTLE MONOCACY R UT 2 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 6/12/2002.

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 Good - 4.0 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 392 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 0 %
Agricultural Land Use 37 %
Forested Land Use 58 %


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 16/20 (Optimal)
Velocity/Depth Diversity 7/20 (Marginal)
Pool Quality
Pool Extent = 46 meters 		10/20 (Marginal)
Riffle Quality
Riffle Extent = 42 meters 		12/20 (Suboptimal)
Shading 98 %
Embeddedness 25 %


Stream Water Quality:
Water temperature 20.4 ° C
Dissolved oxygen (DO) 8.5 mg/L
pH (lab) 6.91
Conductivity 80 µmho/cm
Alkalinity
(acid neutralizing capacity) 		265.2 µeq/L
Dissolved organic carbon (DOC) 1.6 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 5 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 188
Blue Ridge Sculpin 97
Rosyside Dace 68
Creek Chub 46
Fantail Darter 16
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Two-Lined Salamander

Crayfish:
No crayfish noted.

Exotic Plants:
Canada Thistle
Japanese Honeysuckle
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Micropsectra Non-Biting Midges 43
Ephemerellidae Spiny Crawler Mayfly 25
Trissopelopia Non-Biting Midges 8
Isotomurus Elongate-Bodied Springtail 4
Leptophlebiidae Pronggilled Mayfly 4
Ameletus Combmouthed Minnow Mayfly 3
Baetidae Small Minnow Mayfly 3
Amphinemura Spring Stonefly 3
Stenonema Flatheaded Mayfly 3
Parametriocnemus Non-Biting Midges 2
Hydropsyche Net-Spinning Caddisfly 2
Isoperla Stripetail Stonefly 2
Oulimnius Riffle Beetle 2
Lumbriculidae Worm 1
Eccoptura Yellow Stone Stonefly 1
Conchapelopia Non-Biting Midges 1
Orthocladius Non-Biting Midges 1
Sympotthastia Non-Biting Midges 1
Tvetenia Non-Biting Midges 1
Leptophlebia Pronggilled Mayfly 1
Planariidae Flatworm 1
Rhyacophila Free-Living Caddisfly 1
Cheumatopsyche Net-Spinning Caddisfly 1
Chimarra Fingernet Caddisfly 1
Platysmittia 1
Naididae Aquatic Worm 1
Neophylax Caddisfly 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.