MBSS Site Summary for: LOCH-120-S-2015

Site Photos

Field photo showing stream conditions at site LOCH-120-S-2015-1 (Opens in a new window) Field photo showing stream conditions at site LOCH-120-S-2015-2 (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 3/9/2015 and again in the summer on 8/6/2015.

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 - 3.0 / 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 17/20 (Optimal)
Epifaunal Substrate 17/20 (Optimal)
Velocity/Depth Diversity 10/20 (Marginal)
Pool Quality
Pool Extent = 26 meters 		10/20 (Marginal)
Riffle Quality
Riffle Extent = 49 meters 		16/20 (Optimal)
Shading 75 %
Embeddedness 35 %
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:
pH (lab) 7.14
Alkalinity
(acid neutralizing capacity) 		239.5 µeq/L
Dissolved organic carbon (DOC) 1.1202 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
Blacknose Dace 41
Rosyside Dace 39
Creek Chub 33
Brown Trout 5
Longnose Dace 4
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Green Frog

Crayfish:
Cambarus bartonii bartonii
Orconectes virilis

Exotic Plants:
Garlic Mustard
Japanese Barberry
Japanese Stiltgrass
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Epeorus Mayfly 14
Perlidae Common Stonefly 11
Rhyacophila Free-Living Caddisfly 8
Prosimulium Black Fly 7
Micropsectra Non-Biting Midges 7
Eukiefferiella Non-Biting Midges 5
Ephemerella Sulphur Mayfly 5
Prostoia Spring Stonefly 4
Baetis Blue-Winged Olive Mayfly 4
Ameletus Combmouthed Minnow Mayfly 4
Orthocladiinae Midge 4
Hydropsyche Net-Spinning Caddisfly 3
Cheumatopsyche Net-Spinning Caddisfly 2
Diplectrona Net-Spinning Caddisfly 2
Dolophilodes Medium Evening Sedge Caddisfly 2
Neophylax Caddisfly 2
Acroneuria Golden Stoneflies 2
Haploperla Green Stonefly 2
Dicranota Hairy-Eyed Cranefly 2
Leuctridae Rolledwinged Stonefly 2
Orthocladius Non-Biting Midges 2
Parametriocnemus Non-Biting Midges 2
Rheotanytarsus Non-Biting Midges 1
Microtendipes Non-Biting Midges 1
Isoperla Stripetail Stonefly 1
Taeniopteryx Winter Stonefly 1
Eccoptura Yellow Stone Stonefly 1
Glossosoma Little Black Caddisfly 1
Lepidostoma Little Brown Sedge Caddisfly 1
Stenelmis Beetle 1
Antocha Crane Fly 1
Philopotamidae Fingernet Caddisfly 1
Brillia Non-Biting Midges 1
Diplocladius 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.