MBSS Site Summary for: LOCH-107-R-2002

Site Photos

Field photo showing stream conditions at site LOCH-107-R-2002-508 (Opens in a new window) Field photo showing stream conditions at site LOCH-107-R-2002-509 (Opens in a new window)

Located on PINEY RUN UT 1 in the Loch Raven Reservoir watershed, 8-digit code: 02130805.
This stream was visited in the spring on 4/3/2002 and again in the summer on 6/27/2002.

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 - 1.3 / 5.0
Benthic IBI Fair - 3.7 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 299 acres Cows standing in a stream at a site with high agricultural land use. Cows survey the sampling procedure at this extreme example of a highly agriculturalized site.
Urban Land Use 0 %
Agricultural Land Use 82 %
Forested Land Use 18 %


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

Physical Stream Habitat
Instream Habitat 3/20 (Poor)
Epifaunal Substrate 3/20 (Poor)
Velocity/Depth Diversity 6/20 (Marginal)
Pool Quality
Pool Extent = 52 meters 		6/20 (Marginal)
Riffle Quality
Riffle Extent = 23 meters 		6/20 (Marginal)
Shading 20 %
Embeddedness 85 %
The embeddedness, a measure of silt on the stream bottom, was 85%. This is relatively high, and may exclude some biota.


Stream Water Quality:
Water temperature 22.2 ° C
Dissolved oxygen (DO) 4.8 mg/L
Dissolved oxygen levels measured in the stream were very low (4.8 mg/L). Many fishes and other aquatic animals cannot tolerate low levels of oxygen in the water.
pH (lab) 6.91
Conductivity 210 µmho/cm
Alkalinity
(acid neutralizing capacity) 		379.3 µeq/L
Dissolved organic carbon (DOC) 2.7 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 2 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 2
Creek Chub 2
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Two-Lined Salamander

Crayfish:
No crayfish noted.

Exotic Plants:
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Orthocladius Non-Biting Midges 16
Polypedilum Non-Biting Midges 14
Parametriocnemus Non-Biting Midges 10
Ephemerella Sulphur Mayfly 7
Neophylax Caddisfly 6
Tubificidae Aquatic Worm 5
Tanytarsus Non-Biting Midges 4
Lumbriculidae Worm 3
Optioservus Riffle Beetle 2
Cricotopus Non-Biting Midges 2
Naididae Aquatic Worm 2
Prosimulium Black Fly 2
Rheocricotopus Non-Biting Midges 2
Stempellinella Non-Biting Midges 2
Sympotthastia Non-Biting Midges 2
Cheumatopsyche Net-Spinning Caddisfly 2
Conchapelopia Non-Biting Midges 2
Corynoneura Non-Biting Midges 1
Hydropsyche Net-Spinning Caddisfly 1
Chaetocladius Non-Biting Midges 1
Diamesa Bloodworm 1
Tipulidae Cranefly 1
Eurylophella Mayfly 1
Stagnicola Air Breathing Freshwater Snail 1
Stenelmis Beetle 1
Probezzia Biting Midges 1
Leuctridae Rolledwinged Stonefly 1
Baetidae Small Minnow Mayfly 1
Tvetenia Non-Biting Midges 1
Leptophlebiidae Pronggilled Mayfly 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.