MBSS Site Summary for: LOCH-213-R-2002

Site Photos

Field photo showing stream conditions at site LOCH-213-R-2002-504 (Opens in a new window) Field photo showing stream conditions at site LOCH-213-R-2002-505 (Opens in a new window)

Located on INDIAN RUN 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 7/30/2002.

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 Good - 4.0 / 5.0
Benthic IBI Fair - 3.3 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 2,402 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 65 %
Forested Land Use 33 %


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

Physical Stream Habitat
Instream Habitat 18/20 (Optimal)
Epifaunal Substrate 18/20 (Optimal)
Velocity/Depth Diversity 14/20 (Suboptimal)
Pool Quality
Pool Extent = 55 meters 		13/20 (Suboptimal)
Riffle Quality
Riffle Extent = 25 meters 		10/20 (Marginal)
Shading 77 %
Embeddedness 10 %


Stream Water Quality:
Water temperature 20.2 ° C
Dissolved oxygen (DO) 6.9 mg/L
pH (lab) 7.71
Conductivity 240 µmho/cm
Alkalinity
(acid neutralizing capacity) 		904.5 µeq/L
Dissolved organic carbon (DOC) 1.1 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 13 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 276
Blue Ridge Sculpin 162
White Sucker 84
Longnose Dace 77
Rosyside Dace 36
Creek Chub 31
Common Shiner 30
Brown Trout 29
River Chub 22
Tessellated Darter 20
Cutlip Minnow 7
Bluegill 3
Pumpkinseed 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

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

Crayfish:
No crayfish noted.

Exotic Plants:
Canada Thistle
Japanese Honeysuckle
Japanese Stiltgrass
Mile-A-Minute
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Ephemerella Sulphur Mayfly 62
Orthocladius Non-Biting Midges 12
Hydropsyche Net-Spinning Caddisfly 10
Cheumatopsyche Net-Spinning Caddisfly 7
Stenonema Flatheaded Mayfly 4
Orthocladiinae Midge 3
Parametriocnemus Non-Biting Midges 3
Polypedilum Non-Biting Midges 3
Rheosmittia Non-Biting Midges 3
Thienemannimyia group Non-Biting Midges 3
Optioservus Riffle Beetle 2
Eukiefferiella Non-Biting Midges 2
Cricotopus/Orthocladius Midge 2
Naididae Aquatic Worm 2
Hydropsychidae Common Netspinner Caddisfly 2
Antocha Crane Fly 1
Heptageniidae Flathead Mayfly 1
Drunella Blue-Winged Olive Mayfly 1
Rhyacophila Free-Living Caddisfly 1
Nigronia Megaloptera (Dark Fishfly) 1
Micropsectra Non-Biting Midges 1
Nanocladius Non-Biting Midges 1
Chironomini Non-Biting Midge 1
Cricotopus Non-Biting Midges 1
Tanytarsini Non-Biting Midges 1
Tanytarsus Non-Biting Midges 1
Oulimnius Riffle Beetle 1
Amphinemura Spring Stonefly 1
Tvetenia Non-Biting Midges 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.