MBSS Site Summary for: LOCH-120-S-2016


Located on Baisman Run in the Loch Raven Reservoir watershed, 8-digit code: 02130805.
This stream was visited in the spring on 3/2/2016 and again in the summer on 8/9/2016.

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 - 2.7 / 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 417 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 39.1 %
Agricultural Land Use 0.2 %
Forested Land Use 59.1 %


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

Physical Stream Habitat
Instream Habitat 13/20 (Suboptimal)
Epifaunal Substrate 15/20 (Suboptimal)
Velocity/Depth Diversity 10/20 (Marginal)
Pool Quality
Pool Extent = 37 meters 		10/20 (Marginal)
Riffle Quality
Riffle Extent = 38 meters 		15/20 (Suboptimal)
Shading 80 %
Embeddedness 30 %


Stream Water Quality:
pH (lab) 7.22
Alkalinity
(acid neutralizing capacity) 		217.2 µeq/L
Dissolved organic carbon (DOC) 0.9923 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 6 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 31
Rosyside Dace 31
Creek Chub 24
Longnose Dace 6
Brown Trout 1
River Chub 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Green Frog
Northern Water Snake

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Barberry
Japanese Stiltgrass
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Isoperla Stripetail Stonefly 20
Ephemerella Sulphur Mayfly 16
Hydropsyche Net-Spinning Caddisfly 10
Micropsectra Non-Biting Midges 9
Oulimnius Riffle Beetle 7
Baetis Blue-Winged Olive Mayfly 6
Epeorus Mayfly 5
Prostoia Spring Stonefly 5
Orthocladius Non-Biting Midges 4
Thienemannimyia Group Non-Biting Midges 3
Corynoneura Non-Biting Midges 3
Perlodidae Perlodid Stonefly 3
Haploperla Green Stonefly 3
Hydropsychidae Common Netspinner Caddisfly 3
Perlidae Common Stonefly 2
Tipula Crane Fly 2
Chimarra Fingernet Caddisfly 2
Diplectrona Net-Spinning Caddisfly 2
Brillia Non-Biting Midges 2
Eukiefferiella Non-Biting Midges 2
Amphinemura Spring Stonefly 2
Tvetenia Non-Biting Midges 1
Psephenus Water Penny 1
Heptageniidae Flathead Mayfly 1
Glossosoma Little Black Caddisfly 1
Isotomurus Elongate-Bodied Springtail 1
Naididae Aquatic Worm 1
Diamesa Bloodworm 1
Antocha Crane Fly 1
Hexatoma Crane 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.