MBSS Site Summary for: LOCH-120-S-2005


Located on Baisman Run in the Loch Raven Reservoir watershed, 8-digit code: 02130805.
This stream was visited in the spring on 4/6/2005 and again in the summer on 6/2/2005.

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 - 4.7 / 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 15/20 (Suboptimal)
Velocity/Depth Diversity 13/20 (Suboptimal)
Pool Quality
Pool Extent = 31 meters 		13/20 (Suboptimal)
Riffle Quality
Riffle Extent = 65 meters 		15/20 (Suboptimal)
Shading 94 %
Embeddedness 35 %


Stream Water Quality:
Water temperature 14.6 ° C
Dissolved oxygen (DO) 10.4 mg/L
pH (lab) 7.2
Conductivity 116 µmho/cm
Alkalinity
(acid neutralizing capacity) 		165.3455 µeq/L
Dissolved organic carbon (DOC) 0.6878 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 41
Blacknose Dace 28
Rosyside Dace 6
Longnose Dace 5
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Green Frog

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Stiltgrass
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Ephemerella Sulphur Mayfly 48
Leuctridae Rolledwinged Stonefly 8
Oulimnius Riffle Beetle 7
Prosimulium Black Fly 7
Diplectrona Net-Spinning Caddisfly 5
Hydropsyche Net-Spinning Caddisfly 5
Optioservus Riffle Beetle 5
Epeorus Mayfly 5
Amphinemura Spring Stonefly 4
Pteronarcys Giant Stonefly 4
Parametriocnemus Non-Biting Midges 3
Perlodidae Perlodid Stonefly 2
Elmidae Riffle Beetle 2
Heptageniidae Flathead Mayfly 2
Boyeria Spotted Darner Dragonfly 1
Cheumatopsyche Net-Spinning Caddisfly 1
Prostoia Spring Stonefly 1
Isoperla Stripetail Stonefly 1
Rheosmittia Non-Biting Midges 1
Sympotthastia Non-Biting Midges 1
Tvetenia Non-Biting Midges 1
Limnephilidae Northern Casemaker Caddisfly 1
Eukiefferiella Non-Biting Midges 1
Orthocladius Non-Biting Midges 1
Acroneuria Golden Stoneflies 1
Glossosoma Little Black Caddisfly 1
Ceratopogon Biting Midge 1
Probezzia Biting Midges 1
Neophylax Caddisfly 1
Pseudolimnophila Crane Fly 1
Empididae Dance Fly 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.