MBSS Site Summary for: PATL-111-R-2000

Site Photos

Field photo showing stream conditions at site PATL-111-R-2000-06_01 (Opens in a new window) Field photo showing stream conditions at site PATL-111-R-2000-06_02 (Opens in a new window) Field photo showing stream conditions at site PATL-111-R-2000-06_03 (Opens in a new window)

Located on DEEP RUN UT2 in the Patapsco River L N Br watershed, 8-digit code: 02130906.
This stream was visited in the spring on 3/9/2000 and again in the summer on 6/22/2000.

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 - 2.0 / 5.0
Benthic IBI Poor - 1.3 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 202 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 73.6 %
Agricultural Land Use 2.6 %
Forested Land Use 23.7 %


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

Physical Stream Habitat
Instream Habitat 11/20 (Suboptimal)
Epifaunal Substrate 11/20 (Suboptimal)
Velocity/Depth Diversity 11/20 (Suboptimal)
Pool Quality
Pool Extent = 45 meters 		10/20 (Marginal)
Riffle Quality
Riffle Extent = 39 meters 		9/20 (Marginal)
Shading 85 %
Embeddedness 30 %


Stream Water Quality:
Water temperature 21.3 ° C
Dissolved oxygen (DO) 6.2 mg/L
pH (lab) 7.52
Conductivity 450 µmho/cm
Alkalinity
(acid neutralizing capacity) 		2345 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 6 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 62
White Sucker 14
American Eel 12
Golden Shiner 6
Creek Chub 4
Rosyside Dace 4
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Two-Lined Salamander

Crayfish:
No crayfish noted.

Exotic Plants:
Canada Thistle
Japanese Honeysuckle
Mile-A-Minute
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Orthocladiinae A Non-Biting Midges 29
Cricotopus/Orthocladius Midge 26
Naididae Aquatic Worm 19
Eukiefferiella Non-Biting Midges 13
Cricotopus Non-Biting Midges 7
Parametriocnemus Non-Biting Midges 6
Thienemanniella Non-Biting Midges 4
Corynoneura Non-Biting Midges 2
Diamesa Bloodworm 2
Tipula Crane Fly 2
Gordiidae Horsehair Worm 1
Tubificidae Aquatic Worm 1
Helichus Beetle 1
Diplocladius Non-Biting Midges 1
Krenopelopia Non-Biting Midge 1
Conchapelopia Non-Biting Midges 1
Tvetenia 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.