MBSS Site Summary for: PRMO-307-R-2002

Site Photos

Field photo showing stream conditions at site PRMO-307-R-2002-1 (Opens in a new window) Field photo showing stream conditions at site PRMO-307-R-2002-2 (Opens in a new window) Field photo showing stream conditions at site PRMO-307-R-2002-3 (Opens in a new window) Field photo showing stream conditions at site PRMO-307-R-2002-4 (Opens in a new window) Field photo showing stream conditions at site PRMO-307-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 6/24/2002.

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 - 4.3 / 5.0
Benthic IBI Fair - 3.0 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 11,435 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 65 %
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 14/20 (Suboptimal)
Epifaunal Substrate 16/20 (Optimal)
Velocity/Depth Diversity 13/20 (Suboptimal)
Pool Quality
Pool Extent = 60 meters 		13/20 (Suboptimal)
Riffle Quality
Riffle Extent = 30 meters 		15/20 (Suboptimal)
Shading 70 %
Embeddedness 20 %


Stream Water Quality:
Water temperature 20.5 ° C
Dissolved oxygen (DO) 8.4 mg/L
pH (lab) 7.6
Conductivity 170 µmho/cm
Alkalinity
(acid neutralizing capacity) 		650.5 µeq/L
Dissolved organic carbon (DOC) 3.6 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 20 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Bluntnose Minnow 511
Blue Ridge Sculpin 228
Blacknose Dace 132
Central Stoneroller 129
Potomac Sculpin 101
Redbreast Sunfish 98
Fantail Darter 63
Silverjaw Minnow 59
Longnose Dace 52
Greenside Darter 44
Tessellated Darter 10
White Sucker 7
Rainbow Darter 5
Spotfin Shiner 5
Yellow Bullhead 5
Fallfish 2
Northern Hogsucker 2
Smallmouth Bass 2
Creek Chub 1
Rock Bass 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Eastern American Toad
Northern Dusky Salamander

Crayfish:
No crayfish noted.

Exotic Plants:
Canada Thistle
Japanese Stiltgrass
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Cheumatopsyche Net-Spinning Caddisfly 24
Orthocladius Non-Biting Midges 12
Amphinemura Spring Stonefly 10
Chimarra Fingernet Caddisfly 8
Orthocladiinae Midge 7
Isonychia Slate Drake Mayfly 6
Ephemerella Sulphur Mayfly 6
Parametriocnemus Non-Biting Midges 6
Hydropsyche Net-Spinning Caddisfly 5
Stenonema Flatheaded Mayfly 5
Oemopteryx Stonefly 4
Hydrobaenus Midge 3
Tvetenia Non-Biting Midges 3
Oulimnius Riffle Beetle 3
Prostoia Spring Stonefly 2
Rheosmittia Non-Biting Midges 2
Antocha Crane Fly 2
Naididae Aquatic Worm 2
Prosimulium Black Fly 2
Simulium Black Fly 2
Paratanytarsus Non-Biting Midges 2
Polypedilum Non-Biting Midges 1
Chaetocladius Non-Biting Midges 1
Micropsectra Non-Biting Midges 1
Neophylax Caddisfly 1
Corydalus Dobsonfly 1
Serratella Mayfly 1
Hemerodromia Tiny Fly 1
Taeniopteryx Winter Stonefly 1
Ferrissia Small Air-Breathing Freshwater Limpets 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.