MBSS Site Summary for: COCA-201-N-2003

Site Photos

Field photo showing stream conditions at site COCA-201-N-2003-1 (Opens in a new window) Field photo showing stream conditions at site COCA-201-N-2003-3 (Opens in a new window) Field photo showing stream conditions at site COCA-201-N-2003-2 (Opens in a new window) Field photo showing stream conditions at site COCA-201-N-2003-4 (Opens in a new window)

Located on UT POTOMAC RIVER in the Potomac River AL Cnty watershed, 8-digit code: 02140508.
This stream was visited in the spring on 4/15/2003 and again in the summer on 7/14/2003.

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 Fair - 3.0 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 2,082 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 1 %
Agricultural Land Use 11 %
Forested Land Use 88 %


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

Physical Stream Habitat
Instream Habitat 12/20 (Suboptimal)
Epifaunal Substrate 11/20 (Suboptimal)
Velocity/Depth Diversity 7/20 (Marginal)
Pool Quality
Pool Extent = 43 meters 		9/20 (Marginal)
Riffle Quality
Riffle Extent = 36 meters 		10/20 (Marginal)
Shading 90 %
Embeddedness 30 %


Stream Water Quality:
Water temperature 19.7 ° C
Dissolved oxygen (DO) 7.4 mg/L
pH (lab) 7.29
Conductivity 85 µmho/cm
Alkalinity
(acid neutralizing capacity) 		124.8 µeq/L
Dissolved organic carbon (DOC) 1.9 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 3 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 252
Fantail Darter 79
Creek Chub 48
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Green Frog
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
Amphinemura Spring Stonefly 28
Leuctridae Rolledwinged Stonefly 18
Philopotamidae Fingernet Caddisfly 18
Simulium Black Fly 10
Prosimulium Black Fly 4
Chloroperlidae Green Stonefly 4
Polypedilum Non-Biting Midges 4
Rheosmittia Non-Biting Midges 3
Stenonema Flatheaded Mayfly 2
Acroneuria Golden Stoneflies 2
Helisoma 1
Diamesa Bloodworm 1
Tipula Crane Fly 1
Chimarra Fingernet Caddisfly 1
Eurylophella Mayfly 1
Nigronia Megaloptera (Dark Fishfly) 1
Orthocladiinae Midge 1
Cheumatopsyche Net-Spinning Caddisfly 1
Hydropsyche Net-Spinning Caddisfly 1
Eukiefferiella Non-Biting Midges 1
Orthocladius Non-Biting Midges 1
Parametriocnemus Non-Biting Midges 1
Isonychia Slate Drake Mayfly 1
Baetidae Small Minnow Mayfly 1
Lumbriculidae Worm 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.