MBSS Site Summary for: PRET-113-R-2000

Site Photos

Field photo showing stream conditions at site PRET-113-R-2000-01 (Opens in a new window) Field photo showing stream conditions at site PRET-113-R-2000-02 (Opens in a new window) Field photo showing stream conditions at site PRET-113-R-2000-03 (Opens in a new window) Field photo showing stream conditions at site PRET-113-R-2000-04 (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 Good - 5.0 / 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 2,097 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 0.3 %
Agricultural Land Use 75.9 %
Forested Land Use 23.7 %


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 14/20 (Suboptimal)
Velocity/Depth Diversity 17/20 (Optimal)
Pool Quality
Pool Extent = 50 meters 		14/20 (Suboptimal)
Riffle Quality
Riffle Extent = 25 meters 		16/20 (Optimal)
Shading 60 %
Embeddedness 30 %


Stream Water Quality:
Water temperature 18.7 ° C
Dissolved oxygen (DO) 8.1 mg/L
pH (lab) 7.31
Conductivity 190 µmho/cm
Alkalinity
(acid neutralizing capacity) 		481.7 µeq/L
Dissolved organic carbon (DOC) 1.4 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 10 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Potomac Sculpin 143
Rosyside Dace 142
Blacknose Dace 52
Common Shiner 51
Creek Chub 18
White Sucker 11
Central Stoneroller 3
Bluegill 2
Green Sunfish 1
Longnose Dace 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Two-Lined Salamander
Pickerel Frog

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Honeysuckle
Mile-A-Minute
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Cricotopus/Orthocladius Midge 46
Prosimulium Black Fly 18
Stilocladius Midge 5
Parametriocnemus Non-Biting Midges 5
Tanytarsus Non-Biting Midges 4
Conchapelopia Non-Biting Midges 4
Eukiefferiella Non-Biting Midges 3
Pycnopsyche Great Autumn Brown Sedge Caddisfly 3
Cheumatopsyche Net-Spinning Caddisfly 3
Chimarra Fingernet Caddisfly 3
Ephemerella Sulphur Mayfly 3
Anchytarsus Beetle 2
Hydropsyche Net-Spinning Caddisfly 1
Brillia Non-Biting Midges 1
Ptilostomis Giant Casemaker Caddisfly 1
Prodiamesa 1
Enchytraeidae Aquatic Worm 1
Ameletus Combmouthed Minnow Mayfly 1
Antocha Crane Fly 1
Tipula Crane Fly 1
Strophopteryx Early Brown Stonefly 1
Taeniopteryx Winter Stonefly 1
Sympotthastia Non-Biting Midges 1
Tvetenia Non-Biting Midges 1
Leptophlebiidae Pronggilled Mayfly 1
Optioservus Riffle Beetle 1
Baetidae Small Minnow Mayfly 1
Oemopteryx 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.