MBSS Site Summary for: PATL-106-R-2000

Site Photos

Field photo showing stream conditions at site PATL-106-R-2000-07_06 (Opens in a new window) Field photo showing stream conditions at site PATL-106-R-2000-07_07 (Opens in a new window)

Located on DEEP RUN UT1 in the Patapsco River L N Br watershed, 8-digit code: 02130906.
This stream was visited in the spring on 3/15/2000 and again in the summer on 7/6/2000.

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 Poor - 1.3 / 5.0
Benthic IBI Fair - 3.3 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 74 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 54 %
Agricultural Land Use 6 %
Forested Land Use 40 %


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

Physical Stream Habitat
Instream Habitat 14/20 (Suboptimal)
Epifaunal Substrate 15/20 (Suboptimal)
Velocity/Depth Diversity 8/20 (Marginal)
Pool Quality
Pool Extent = 50 meters 		9/20 (Marginal)
Riffle Quality
Riffle Extent = 45 meters 		14/20 (Suboptimal)
Shading 95 %
Embeddedness 30 %


Stream Water Quality:
Water temperature 15.9 ° C
Dissolved oxygen (DO) 6.3 mg/L
pH (lab) 5.38
Conductivity 400 µmho/cm
Alkalinity
(acid neutralizing capacity) 		37.9 µeq/L
Dissolved organic carbon (DOC) 1.7 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 1 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Eastern Mudminnow 30
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Dusky Salamander
Northern Green Frog
Northern Red Salamander
Pickerel Frog

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Honeysuckle
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Leuctra  Rolled-Winged Stonefly 52
Simulium Black Fly 24
Thienemanniella Non-Biting Midges 22
Stegopterna Black Fly 7
Oulimnius Riffle Beetle 6
Apsectrotanypus Non-Biting Midges 3
Corynoneura Non-Biting Midges 3
Prosimulium Black Fly 2
Diplectrona Net-Spinning Caddisfly 2
Trissopelopia Non-Biting Midges 2
Orthocladiinae A Non-Biting Midges 2
Orthocladius Non-Biting Midges 1
Polypedilum Non-Biting Midges 1
Zavrelimyia Non-Biting Midges 1
Cordulegaster Spiketail Dragonfly 1
Limnephilus 1
Molanna 1
Eukiefferiella Non-Biting Midges 1
Conchapelopia Non-Biting Midges 1
Neophylax Caddisfly 1
Hexatoma Crane Fly 1
Heterotrissocladius European Non-Biting Midge 1
Rhyacophila Free-Living Caddisfly 1
Caecidotea Isopod 1
Nemouridae Nemourid Stonefly 1
Cheumatopsyche Net-Spinning 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.