MBSS Site Summary for: PATL-213-X-2015

Site Photos

Field photo showing stream conditions at site PATL-213-X-2015_Midpoint-at-P-looking-downstream (Opens in a new window) Field photo showing stream conditions at site PATL-213-X-2015_Midpoint-at-P-looking-upstream (Opens in a new window)

Located on BRICE RUN in the Patapsco River L N Br watershed, 8-digit code: 02130906.
This stream was visited in the spring on 4/6/2015 and again in the summer on 9/8/2015.

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 - 4.7 / 5.0
Benthic IBI Poor - 2.7 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 6,356 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 17.7 %
Agricultural Land Use 32.5 %
Forested Land Use 47.5 %


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 15/20 (Suboptimal)
Velocity/Depth Diversity 17/20 (Optimal)
Pool Quality
Pool Extent = 45 meters 		12/20 (Suboptimal)
Riffle Quality
Riffle Extent = 52 meters 		14/20 (Suboptimal)
Shading 85 %
Embeddedness 35 %


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 25 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Spottail Shiner 182
Blue Ridge Sculpin 151
Central Stoneroller 80
Cutlip Minnow 69
Rosyside Dace 66
Longnose Dace 51
Blacknose Dace 40
White Sucker 40
Creek Chub 24
Swallowtail Shiner 23
Redbreast Sunfish 18
Tessellated Darter 18
Bluntnose Minnow 14
American Eel 10
Common Shiner 6
Green Sunfish 6
Yellow Bullhead 6
Largemouth Bass 5
Margined Madtom 4
Rock Bass 4
Northern Hogsucker 2
River Chub 2
Smallmouth Bass 2
Brown Trout 1
Fathead Minnow 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Fowler's Toad
Northern Water Snake
Pickerel Frog

Crayfish:
Orconectes virilis

Exotic Plants:
Garlic Mustard
Japanese Honeysuckle
Japanese Stiltgrass
Multiflora Rose
Wineberry
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Orthocladius Non-Biting Midges 54
Gammarus Amphipod 19
Orthocladiinae Midge 9
Hydropsyche Net-Spinning Caddisfly 9
Cheumatopsyche Net-Spinning Caddisfly 8
Clinocera Aquatic Dance Fly 6
Sympotthastia Non-Biting Midges 6
Ephemerella Sulphur Mayfly 5
Cricotopus Non-Biting Midges 4
Polypedilum Non-Biting Midges 3
Rheotanytarsus Non-Biting Midges 3
Synorthocladius 2
Hydrobaenus Midge 2
Prosimulium Black Fly 1
Hydropsychidae Common Netspinner Caddisfly 1
Strophopteryx Early Brown Stonefly 1
Maccaffertium March Brown And Cahill Mayfly 1
Nigronia Megaloptera (Dark Fishfly) 1
Tvetenia Non-Biting Midges 1
Oulimnius Riffle Beetle 1
Phaenopsectra Non-Biting Midges 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.