MBSS Site Summary for: PRAL-102-R-2008

Site Photos

Field photo showing stream conditions at site PRAL-102-R-2008-1 (Opens in a new window) Field photo showing stream conditions at site PRAL-102-R-2008-2 (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 3/26/2008 and again in the summer on 6/17/2008.

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 Poor - 1.0 / 5.0
Benthic IBI Fair - 3.0 / 5.0

Land Use

Land use can provide important information for determining stream health.
(Hint: Screen readers will announce definitions; mouse users can hover over dotted text.)
Catchment area 113 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 6.5 %
Agricultural Land Use 0 %
Forested Land Use 93.5 %


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

Physical Stream Habitat
Instream Habitat 15/20 (Suboptimal)
Epifaunal Substrate 16/20 (Optimal)
Velocity/Depth Diversity 7/20 (Marginal)
Pool Quality
Pool Extent = 56 meters 		9/20 (Marginal)
Riffle Quality
Riffle Extent = 24 meters 		9/20 (Marginal)
Shading 90 %
Embeddedness 0 %


Stream Water Quality:
Water temperature 16 ° C
Dissolved oxygen (DO) 6.6 mg/L
pH (lab) 7.25
Conductivity 75 µmho/cm
Alkalinity
(acid neutralizing capacity) 		227.1 µeq/L
Dissolved organic carbon (DOC) 1.3628 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 1 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
No Fish Observed 0
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Dusky Salamander
Wood Frog

Crayfish:
Cambarus bartonii bartonii

Exotic Plants:
Japanese Stiltgrass
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Ameletus Combmouthed Minnow Mayfly 35
Stegopterna Black Fly 18
Perlodidae Perlodid Stonefly 13
Amphinemura Spring Stonefly 6
Prosimulium Black Fly 6
Prostoia Spring Stonefly 4
Isotomidae Springtail 4
Parametriocnemus Non-Biting Midges 4
Leptophlebiidae Pronggilled Mayfly 3
Sweltsa Stonefly 2
Leuctra  Rolled-Winged Stonefly 2
Crangonyx Amphipod 2
Rhyacophila Free-Living Caddisfly 2
Chloroperlidae Green Stonefly 2
Caecidotea Isopod 1
Epeorus Mayfly 1
Nemouridae Nemourid Stonefly 1
Molophilus 1
Ephemerella Sulphur Mayfly 1
Tvetenia Non-Biting Midges 1
Ironoquia Northern Caddisfly 1
Parakiefferiella European Non-Biting Midge 1
Leuctridae Rolledwinged Stonefly 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.