MBSS Site Summary for: PATL-209-X-2017

Site Photos

Field photo showing stream conditions at site PATL-209-X-2017-MidpointFacingDownstream (Opens in a new window) Field photo showing stream conditions at site PATL-209-X-2017-MidpointFacingUpstream (Opens in a new window)

Located on Dogwood Run in the Patapsco River L N Br watershed, 8-digit code: 02130906.
This stream was visited in the spring on 3/6/2017 and again in the summer on 6/15/2017.

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 Good - 4.0 / 5.0
Benthic IBI Poor - 2.0 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 4,469 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 40 %
Agricultural Land Use 14.9 %
Forested Land Use 43.3 %


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

Physical Stream Habitat
Instream Habitat 13/20 (Suboptimal)
Epifaunal Substrate 15/20 (Suboptimal)
Velocity/Depth Diversity 15/20 (Suboptimal)
Pool Quality
Pool Extent = 19 meters 		16/20 (Optimal)
Riffle Quality
Riffle Extent = 56 meters 		16/20 (Optimal)
Shading 51 %
Embeddedness 55 %
The embeddedness, a measure of silt on the stream bottom, was 55%. This is relatively high, and may exclude some biota.


Stream Water Quality:
No water quality measurements available for this site.

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 14 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Longnose Dace 139
Blue Ridge Sculpin 84
River Chub 31
Cutlip Minnow 20
Blacknose Dace 14
Swallowtail Shiner 13
American Eel 11
Central Stoneroller 7
Redbreast Sunfish 7
Margined Madtom 6
Rock Bass 5
Tessellated Darter 5
Rainbow Trout 2
White Sucker 2
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
No amphibians and reptiles noted.

Crayfish:
Orconectes virilis

Exotic Plants:
English Ivy
Japanese Stiltgrass
Multiflora Rose
Oriental Bittersweet
Tree Of Heaven
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
DIAMESA Bloodworm 33
CRICOTOPUS Non-Biting Midges 30
NAIDIDAE Aquatic Worm 17
EUKIEFFERIELLA Non-Biting Midges 9
ORTHOCLADIUS Non-Biting Midges 8
HYDROPSYCHE Net-Spinning Caddisfly 5
CORYNONEURA Non-Biting Midges 5
EPHEMERELLA Sulphur Mayfly 3
SYMPOTTHASTIA Non-Biting Midges 3
CHEUMATOPSYCHE Net-Spinning Caddisfly 3
CLINOCERA Aquatic Dance Fly 3
DIAMESINAE Non-Biting Midges 2
CARDIOCLADIUS Non-Biting Midge 1
TANYTARSUS Non-Biting Midges 1
RHEOCRICOTOPUS Non-Biting Midges 1
SYNORTHOCLADIUS 1
PERLIDAE Common Stonefly 1
CHIMARRA Fingernet Caddisfly 1
ORTHOCLADIINAE Midge 1
HEMERODROMIA Tiny Fly 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.