MBSS Site Summary for: LOCH-120-S-2007

Site Photos

Field photo showing stream conditions at site LOCH-120-S-2007-1 (Opens in a new window) Field photo showing stream conditions at site LOCH-120-S-2007-2 (Opens in a new window)

Located on Baisman Run in the Loch Raven Reservoir watershed, 8-digit code: 02130805.
This stream was visited in the spring on 3/20/2007 and again in the summer on 6/18/2007.

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 Good - 4.0 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 427 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 2.1 %
Agricultural Land Use 42.9 %
Forested Land Use 54.6 %


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

Physical Stream Habitat
Instream Habitat 16/20 (Optimal)
Epifaunal Substrate 18/20 (Optimal)
Velocity/Depth Diversity 11/20 (Suboptimal)
Pool Quality
Pool Extent = 31 meters 		11/20 (Suboptimal)
Riffle Quality
Riffle Extent = 44 meters 		15/20 (Suboptimal)
Shading 90 %
Embeddedness 25 %


Stream Water Quality:
Water temperature 17.6 ° C
Dissolved oxygen (DO) 9 mg/L
pH (lab) 7.02
Conductivity 136 µmho/cm
Alkalinity
(acid neutralizing capacity) 		193.5 µeq/L
Dissolved organic carbon (DOC) 0.6682 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
Creek Chub 22
Blacknose Dace 17
Longnose Dace 3
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Eastern American Toad
Long-Tailed Salamander
Northern Dusky Salamander
Northern Green Frog
Northern Two-Lined Salamander
Wood Frog

Crayfish:
Cambarus bartonii bartonii
Orconectes virilis

Exotic Plants:
Japanese Barberry
Japanese Stiltgrass
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Prosimulium Black Fly 38
Ephemerella Sulphur Mayfly 19
Micropsectra Non-Biting Midges 6
Tipula Crane Fly 5
Diplectrona Net-Spinning Caddisfly 3
Corynoneura Non-Biting Midges 3
Parametriocnemus Non-Biting Midges 3
Tvetenia Non-Biting Midges 3
Elmidae Riffle Beetle 2
Polypedilum Non-Biting Midges 2
Stenonema Flatheaded Mayfly 2
Rhyacophila Free-Living Caddisfly 1
Pteronarcys Giant Stonefly 1
Acroneuria Golden Stoneflies 1
Epeorus Mayfly 1
Nemouridae Nemourid Stonefly 1
Cheumatopsyche Net-Spinning Caddisfly 1
Perlidae Common Stonefly 1
Ceratopogon Biting Midge 1
Probezzia Biting Midges 1
Paraphaenocladius Non-Biting Midges 1
Orthocladius Non-Biting Midges 1
Tipulidae Cranefly 1
Heptageniidae Flathead Mayfly 1
Rheosmittia Non-Biting Midges 1
Oulimnius Riffle Beetle 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.