MBSS Site Summary for: PRET-101-R-2000

Site Photos

Field photo showing stream conditions at site PRET-101-R-2000-01 (Opens in a new window) Field photo showing stream conditions at site PRET-101-R-2000-02 (Opens in a new window)

Located on SOUTH BR GUNPOWDER FALLS in the Prettyboy Reservoir watershed, 8-digit code: 02130806.
This stream was visited in the spring on 3/2/2000 and again in the summer on 6/12/2000.

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 - 1.7 / 5.0
Benthic IBI Poor - 2.3 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 312 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 0.4 %
Agricultural Land Use 53.9 %
Forested Land Use 45.4 %


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

Physical Stream Habitat
Instream Habitat 11/20 (Suboptimal)
Epifaunal Substrate 11/20 (Suboptimal)
Velocity/Depth Diversity 8/20 (Marginal)
Pool Quality
Pool Extent = 7 meters 		7/20 (Marginal)
Riffle Quality
Riffle Extent = 67 meters 		10/20 (Marginal)
Shading 65 %
Embeddedness 20 %


Stream Water Quality:
Water temperature 16.3 ° C
Dissolved oxygen (DO) 9 mg/L
pH (lab) 7.17
Conductivity 240 µmho/cm
Alkalinity
(acid neutralizing capacity) 		467.2 µeq/L
Dissolved organic carbon (DOC) 1.2 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 2 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 291
Creek Chub 8
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Two-Lined Salamander

Crayfish:
No crayfish noted.

Exotic Plants:
Canada Thistle
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Parametriocnemus Non-Biting Midges 28
Micropsectra Non-Biting Midges 14
Cricotopus/Orthocladius Midge 11
Sympotthastia Non-Biting Midges 6
Pisidiidae Pill Clam 5
Rheosmittia Non-Biting Midges 4
Diplectrona Net-Spinning Caddisfly 3
Tubificidae Aquatic Worm 3
Prosimulium Black Fly 3
Neophylax Caddisfly 3
Conchapelopia Non-Biting Midges 2
Corynoneura Non-Biting Midges 2
Trissopelopia Non-Biting Midges 2
Microtendipes Non-Biting Midges 2
Polypedilum Non-Biting Midges 2
Perlodidae Perlodid Stonefly 1
Thienemanniella Non-Biting Midges 1
Amphinemura Spring Stonefly 1
Prostoia Spring Stonefly 1
Lumbriculidae Worm 1
Eccoptura Yellow Stone Stonefly 1
Eukiefferiella Non-Biting Midges 1
Orthocladiinae Midge 1
Clinocera Aquatic Dance Fly 1
Naididae Aquatic Worm 1
Pseudolimnophila Crane Fly 1
Tipula Crane Fly 1
Heterotrissocladius European Non-Biting Midge 1
Dicranota Hairy-Eyed Cranefly 1
Tabanidae Horse Fly 1
Nigronia Megaloptera (Dark Fishfly) 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.