MBSS Site Summary for: LOCH-112-R-2002

Site Photos

Field photo showing stream conditions at site LOCH-112-R-2002-513 (Opens in a new window) Field photo showing stream conditions at site LOCH-112-R-2002-514 (Opens in a new window)

Located on MCGILL RUN UT in the Loch Raven Reservoir watershed, 8-digit code: 02130805.
This stream was visited in the spring on 4/3/2002 and again in the summer on 6/19/2002.

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 - 2.3 / 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 708 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 %
Agricultural Land Use 73 %
Forested Land Use 27 %


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 18/20 (Optimal)
Velocity/Depth Diversity 9/20 (Marginal)
Pool Quality
Pool Extent = 24 meters 		7/20 (Marginal)
Riffle Quality
Riffle Extent = 51 meters 		11/20 (Suboptimal)
Shading 97 %
Embeddedness 17 %


Stream Water Quality:
Water temperature 18.1 ° C
Dissolved oxygen (DO) 8.3 mg/L
pH (lab) 7.41
Conductivity 130 µmho/cm
Alkalinity
(acid neutralizing capacity) 		410.3 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 5 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 52
Creek Chub 23
Longnose Dace 16
Rosyside Dace 16
Brown Trout 2
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Green Frog
Northern Two-Lined Salamander
Pickerel Frog

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Honeysuckle
Japanese Stiltgrass
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Ephemerella Sulphur Mayfly 111
Optioservus Riffle Beetle 6
Dicranota Hairy-Eyed Cranefly 5
Oulimnius Riffle Beetle 4
Amphinemura Spring Stonefly 3
Leptophlebiidae Pronggilled Mayfly 3
Elmidae Riffle Beetle 3
Leptophlebia Pronggilled Mayfly 2
Tanytarsus Non-Biting Midges 2
Polypedilum Non-Biting Midges 2
Stenacron Mayfly 2
Chelifera Aquatic Dance Fly 2
Perlidae Common Stonefly 2
Hexatoma Crane Fly 1
Heptageniidae Flathead Mayfly 1
Rhyacophila Free-Living Caddisfly 1
Girardia Freshwater Flatworm 1
Anchytarsus Beetle 1
Prosimulium Black Fly 1
Gomphidae Clubtail Dragonfly 1
Hydropsyche Net-Spinning Caddisfly 1
Cladotanytarsus Non-Biting Midge 1
Micropsectra Non-Biting Midges 1
Tanytarsini Non-Biting Midges 1
Epeorus Mayfly 1
Thienemannimyia group Non-Biting Midges 1
Trissopelopia Non-Biting Midges 1
Perlodidae Perlodid Stonefly 1
Leuctra  Rolled-Winged Stonefly 1
Prostoia Spring Stonefly 1
Isoperla Stripetail Stonefly 1
Capniidae Small Winter Stonefly 1
Ectopria Water Penny Beetle 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.