MBSS Site Summary for: LOCH-102-S-2000

Site Photos

Field photo showing stream conditions at site LOCH-102-S-2000-01 (Opens in a new window) Field photo showing stream conditions at site LOCH-102-S-2000-02 (Opens in a new window)

Located on BEAVERDAM RUN in the Loch Raven Reservoir watershed, 8-digit code: 02130805.
This stream was visited in the spring on 3/23/2000 and again in the summer on 7/19/2000.

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 646 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 0.4 %
Agricultural Land Use 42.9 %
Forested Land Use 56.6 %


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 14/20 (Suboptimal)
Velocity/Depth Diversity 8/20 (Marginal)
Pool Quality
Pool Extent = 46 meters 		9/20 (Marginal)
Riffle Quality
Riffle Extent = 40 meters 		14/20 (Suboptimal)
Shading 90 %
Embeddedness 20 %


Stream Water Quality:
Water temperature 15.3 ° C
Dissolved oxygen (DO) 8.8 mg/L
pH (lab) 6.32
Conductivity 90 µmho/cm
Alkalinity
(acid neutralizing capacity) 		172.8 µeq/L
Dissolved organic carbon (DOC) 1.8 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 7 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 108
Creek Chub 70
Longnose Dace 44
Rosyside Dace 15
Brown Trout 2
River Chub 1
White Sucker 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

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

Crayfish:
No crayfish noted.

Exotic Plants:
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Ephemerella Sulphur Mayfly 57
Neophylax Caddisfly 7
Diplectrona Net-Spinning Caddisfly 6
Conchapelopia Non-Biting Midges 6
Eurylophella Mayfly 4
Simuliidae Black Fly 4
Amphinemura Spring Stonefly 4
Optioservus Riffle Beetle 3
Serratella Mayfly 3
Eukiefferiella Non-Biting Midges 2
Micropsectra Non-Biting Midges 2
Simulium Black Fly 2
Diploperla 2
Naididae Aquatic Worm 2
Perlidae Common Stonefly 2
Oulimnius Riffle Beetle 2
Prosimulium Black Fly 2
Rheosmittia Non-Biting Midges 2
Eccoptura Yellow Stone Stonefly 1
Antocha Crane Fly 1
Heleniella European Non-Biting Midge 1
Pycnopsyche Great Autumn Brown Sedge Caddisfly 1
Dicranota Hairy-Eyed Cranefly 1
Lepidostoma Little Brown Sedge Caddisfly 1
Probezzia Biting Midges 1
Baetis Blue-Winged Olive Mayfly 1
Orthocladius Non-Biting Midges 1
Parametriocnemus Non-Biting Midges 1
Lype Net Tube Caddisfly 1
Corynoneura 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.