MBSS Site Summary for: LOCH-120-S-2002


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

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 - 4.3 / 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 17/20 (Optimal)
Velocity/Depth Diversity 9/20 (Marginal)
Pool Quality
Pool Extent = 22 meters 		9/20 (Marginal)
Riffle Quality
Riffle Extent = 60 meters 		15/20 (Suboptimal)
Shading 98 %
Embeddedness 35 %


Stream Water Quality:
Water temperature 19.3 ° C
Dissolved oxygen (DO) 8.3 mg/L
pH (lab) 7.32
Conductivity 130 µmho/cm
Alkalinity
(acid neutralizing capacity) 		231.7 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 4 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Creek Chub 95
Blacknose Dace 51
Rosyside Dace 25
Longnose Dace 20
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:
Japanese Honeysuckle
Japanese Stiltgrass
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Ephemerella Sulphur Mayfly 60
Prosimulium Black Fly 7
Oulimnius Riffle Beetle 5
Pteronarcys Giant Stonefly 4
Optioservus Riffle Beetle 4
Isoperla Stripetail Stonefly 4
Amphinemura Spring Stonefly 2
Simulium Black Fly 2
Ameletus Combmouthed Minnow Mayfly 2
Heptageniidae Flathead Mayfly 2
Naididae Aquatic Worm 2
Perlodidae Perlodid Stonefly 2
Cheumatopsyche Net-Spinning Caddisfly 2
Parametriocnemus Non-Biting Midges 2
Polypedilum Non-Biting Midges 1
Tvetenia Non-Biting Midges 1
Eukiefferiella Non-Biting Midges 1
Micropsectra Non-Biting Midges 1
Glossosomatidae Saddlecase Maker Caddisfly 1
Cura Flatworm 1
Acroneuria Golden Stoneflies 1
Glossosoma Little Black Caddisfly 1
Epeorus Mayfly 1
Serratella Mayfly 1
Plecoptera 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.