MBSS Site Summary for: BA-P-333-303-96


Located on BEETREE RUN in the Loch Raven Reservoir watershed, 8-digit code: 02130805.
This stream was visited in the spring on 4/11/1996 and again in the summer on 6/26/1996.

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 Good - 5.0 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 5,871 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 3 %
Agricultural Land Use 56.7 %
Forested Land Use 40 %


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 14/20 (Suboptimal)
Velocity/Depth Diversity 10/20 (Marginal)
Pool Quality
Pool Extent = meters 		11/20 (Suboptimal)
Riffle Quality 15/20 (Suboptimal)
Shading 30 %
Embeddedness 25 %


Stream Water Quality:
Water temperature 16 ° C
Dissolved oxygen (DO) 10.6 mg/L
pH (lab) 7.17
Conductivity 132 µmho/cm
Alkalinity
(acid neutralizing capacity) 		281.7 µeq/L
Dissolved organic carbon (DOC) 1.7 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 14 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Rosyside Dace 288
Blacknose Dace 147
Cutlip Minnow 46
Creek Chub 44
Brown Trout 34
White Sucker 34
Tessellated Darter 31
Common Shiner 25
Longnose Dace 23
River Chub 18
Northern Hogsucker 6
Margined Madtom 3
Bluegill 1
Central Stoneroller 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Dusky Salamander
Northern Green Frog
Northern Spring Peeper
Northern Watersnake
Pickerel Frog

Crayfish:
Orconectes virilis

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Ephemerella Sulphur Mayfly 29
Prosimulium Black Fly 11
Orthocladius Non-Biting Midges 11
Amphinemura Spring Stonefly 8
Epeorus Mayfly 6
Stegopterna Black Fly 3
Paraleptophlebia Blue Quill Mayfly 3
Polypedilum Non-Biting Midges 3
Clinocera Aquatic Dance Fly 3
Hydropsyche Net-Spinning Caddisfly 2
Parametriocnemus Non-Biting Midges 2
Perlodidae Perlodid Stonefly 2
Optioservus Riffle Beetle 1
Isonychia Slate Drake Mayfly 1
Ostrocerca Stonefly 1
Sympotthastia Non-Biting Midges 1
Zavrelimyia Non-Biting Midges 1
Cricotopus Non-Biting Midges 1
Orthocladiinae A Non-Biting Midges 1
Tubificidae Aquatic Worm 1
Baetis Blue-Winged Olive Mayfly 1
Perlidae Common Stonefly 1
Stenonema Flatheaded Mayfly 1
Pteronarcys Giant Stonefly 1
Eurylophella Mayfly 1
Cricotopus/Orthocladius Midge 1
Hydrobaenus Midge 1
Cheumatopsyche Net-Spinning Caddisfly 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.