MBSS Site Summary for: LOCH-120-S-2008

Site Photos

Field photo showing stream conditions at site LOCH-120-S-2008-1 (Opens in a new window) Field photo showing stream conditions at site LOCH-120-S-2008-2 (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 3/11/2008 and again in the summer on 6/16/2008.

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 - 2.0 / 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 417 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 2.2 %
Agricultural Land Use 41.4 %
Forested Land Use 56 %


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 16/20 (Optimal)
Velocity/Depth Diversity 9/20 (Marginal)
Pool Quality
Pool Extent = 35 meters 		10/20 (Marginal)
Riffle Quality
Riffle Extent = 44 meters 		15/20 (Suboptimal)
Shading 90 %
Embeddedness 40 %


Stream Water Quality:
Water temperature 17.5 ° C
Dissolved oxygen (DO) 7.4 mg/L
pH (lab) 6.91
Conductivity 171 µmho/cm
Alkalinity
(acid neutralizing capacity) 		218.5 µeq/L
Dissolved organic carbon (DOC) 0.7398 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 94
Blacknose Dace 81
Rosyside Dace 58
Longnose Dace 9
Bluegill 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Dusky Salamander
Northern Green Frog
Northern Two-Lined Salamander
Wood Frog

Crayfish:
Cambarus bartonii bartonii
Orconectes virilis

Exotic Plants:
Garlic Mustard
Japanese Barberry
Japanese Knotweed
Japanese Stiltgrass
Multiflora Rose
Oriental Bittersweet
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Prosimulium Black Fly 44
Ephemerellidae Spiny Crawler Mayfly 12
Epeorus Mayfly 9
Prostoia Spring Stonefly 5
Acroneuria Golden Stoneflies 4
Pteronarcys Giant Stonefly 2
Heptageniidae Flathead Mayfly 2
Cheumatopsyche Net-Spinning Caddisfly 2
Hydropsyche Net-Spinning Caddisfly 2
Parametriocnemus Non-Biting Midges 2
Neophylax Caddisfly 2
Tvetenia Non-Biting Midges 2
Elmidae Riffle Beetle 1
Optioservus Riffle Beetle 1
Leuctridae Rolledwinged Stonefly 1
Cordulegaster Spiketail Dragonfly 1
Perlidae Common Stonefly 1
Tipula Crane Fly 1
Strophopteryx Early Brown Stonefly 1
Stegopterna Black Fly 1
Naididae Aquatic Worm 1
Helichus Beetle 1
Bezzia Biting Midge 1
Tanypodinae Non-Biting Midges 1
Diplectrona Net-Spinning Caddisfly 1
Rhyacophila Free-Living Caddisfly 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.