MBSS Site Summary for: PATL-116-R-2000

Site Photos

Field photo showing stream conditions at site PATL-116-R-2000-05_07 (Opens in a new window) Field photo showing stream conditions at site PATL-116-R-2000-05_08 (Opens in a new window) Field photo showing stream conditions at site PATL-116-R-2000-05_09 (Opens in a new window)

Located on PATAPSCO R UT1 in the Patapsco River L N Br watershed, 8-digit code: 02130906.
This stream was visited in the spring on 3/8/2000 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 - 1.3 / 5.0
Benthic IBI Poor - 1.7 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 406 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 61.4 %
Agricultural Land Use 4.8 %
Forested Land Use 33.8 %


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 17/20 (Optimal)
Velocity/Depth Diversity 10/20 (Marginal)
Pool Quality
Pool Extent = 25 meters 		9/20 (Marginal)
Riffle Quality
Riffle Extent = 59 meters 		17/20 (Optimal)
Shading 78 %
Embeddedness 39 %
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:
Water temperature 20.3 ° C
Dissolved oxygen (DO) 8 mg/L
pH (lab) 8.92
Conductivity 390 µmho/cm
Alkalinity
(acid neutralizing capacity) 		2592 µeq/L
Dissolved organic carbon (DOC) 2.4 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
Blacknose Dace 205
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
Cricotopus/Orthocladius Midge 25
Cricotopus Non-Biting Midges 15
Sympotthastia Non-Biting Midges 13
Orthocladiinae Midge 13
Simulium Black Fly 13
Naididae Aquatic Worm 6
Orthocladiinae A Non-Biting Midges 6
Eukiefferiella Non-Biting Midges 3
Paraphaenocladius Non-Biting Midges 2
Prosimulium Black Fly 2
Neophylax Caddisfly 2
Isotomurus Elongate-Bodied Springtail 1
Nematomorpha Horsehair Worm 1
Conchapelopia Non-Biting Midges 1
Zavrelimyia Non-Biting Midges 1
Capniidae Small Winter Stonefly 1
Psephenus Water Penny 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.