MBSS Site Summary for: LOCH-120-S-2023

Site Photos

Field photo showing stream conditions at site LOCH-120-S-2023_Midpoint_facing_downstream (Opens in a new window) Field photo showing stream conditions at site LOCH-120-S-2023_Midpoint_facing_upstream (Opens in a new window)

Located on BAISMAN RUN in the Loch Raven Reservoir watershed, 8-digit code: 02130805.
This stream was visited in the spring on 3/2/2023 and again in the summer on 8/16/2023.

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 Fair - 3.3 / 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 No data available A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 26.1 %
Agricultural Land Use 1.5 %
Forested Land Use 71.6 %


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

Physical Stream Habitat
Instream Habitat 17/20 (Optimal)
Epifaunal Substrate 18/20 (Optimal)
Velocity/Depth Diversity 15/20 (Suboptimal)
Pool Quality
Pool Extent = 35 meters 		14/20 (Suboptimal)
Riffle Quality
Riffle Extent = 40 meters 		15/20 (Suboptimal)
Shading 75 %
Embeddedness 50 %


Stream Water Quality:
Water temperature 20.4 ° C
Dissolved oxygen (DO) 8.38 mg/L
pH (lab) 7.18
Alkalinity
(acid neutralizing capacity) 		232.3 µeq/L
Dissolved organic carbon (DOC) 0.65 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
Creek Chub 114
Blacknose Dace 113
Rosyside Dace 84
Longnose Dace 11
Brown Trout 6
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Green Frog

Crayfish:
No crayfish noted.

Exotic Plants:
Garlic Mustard
Japanese Barberry
Japanese Stiltgrass
Wineberry
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
EPHEMERELLA Sulphur Mayfly 16
DIAMESA Bloodworm 11
ACRONEURIA Golden Stoneflies 11
EPEORUS Mayfly 9
CHEUMATOPSYCHE Net-Spinning Caddisfly 7
OPTIOSERVUS Riffle Beetle 7
HYDROPSYCHE Net-Spinning Caddisfly 5
HAPLOPERLA Green Stonefly 4
DICRANOTA Hairy-Eyed Cranefly 4
PROSTOIA Spring Stonefly 4
EUKIEFFERIELLA Non-Biting Midges 4
ECCOPTURA Yellow Stone Stonefly 4
ISOPERLA Stripetail Stonefly 3
SYMPOTTHASTIA Non-Biting Midges 3
OULIMNIUS Riffle Beetle 3
NEOPHYLAX Caddisfly 3
ANCHYTARSUS Beetle 2
PARACHAETOCLADIUS Non-Biting Midge 2
DIPLECTRONA Net-Spinning Caddisfly 1
EURYLOPHELLA Mayfly 1
TELOGANOPSIS Mayfly 1
PROSIMULIUM Black Fly 1
BEZZIA/PALPOMYIA/PROBEZZIA 1
PAGASTIA 1
LEUCTRA  Rolled-Winged Stonefly 1
AMELETUS Combmouthed Minnow Mayfly 1
PTERONARCYS Giant Stonefly 1
ISOTOMIDAE Springtail 1
TVETENIA Non-Biting Midges 1
LEPTOPHLEBIIDAE Pronggilled Mayfly 1
PARAMETRIOCNEMUS Non-Biting Midges 1
RHEOTANYTARSUS 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.