MBSS Site Summary for: PATL-222-R-2000

Site Photos

Field photo showing stream conditions at site PATL-222-R-2000-05_15 (Opens in a new window) Field photo showing stream conditions at site PATL-222-R-2000-05_16 (Opens in a new window)

Located on DEEP RUN UT2 UT1 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 6/29/2000.

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 Good - 4.0 / 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 1,166 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 17.8 %
Agricultural Land Use 21.3 %
Forested Land Use 50.6 %


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 16/20 (Optimal)
Velocity/Depth Diversity 16/20 (Optimal)
Pool Quality
Pool Extent = 55 meters 		16/20 (Optimal)
Riffle Quality
Riffle Extent = 45 meters 		13/20 (Suboptimal)
Shading 65 %
Embeddedness 30 %
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:
Water temperature 21.6 ° C
Dissolved oxygen (DO) 7.4 mg/L
pH (lab) 7.73
Conductivity 300 µmho/cm
Alkalinity
(acid neutralizing capacity) 		1362 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 14 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Central Stoneroller 59
White Sucker 57
Creek Chub 43
Tessellated Darter 42
Blacknose Dace 35
Rosyside Dace 32
American Eel 28
Green Sunfish 23
Swallowtail Shiner 21
Largemouth Bass 9
Bluegill 8
Longnose Dace 7
Golden Shiner 3
Lepomis Hybrid 3
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
Cricotopus/Orthocladius Midge 29
Thienemanniella Non-Biting Midges 12
Diamesa Bloodworm 10
Parametriocnemus Non-Biting Midges 10
Polypedilum Non-Biting Midges 6
Cricotopus Non-Biting Midges 6
Naididae Aquatic Worm 4
Orthocladiinae A Non-Biting Midges 4
Diamesinae Non-Biting Midges 3
Stenelmis Beetle 2
Rheosmittia Non-Biting Midges 2
Orthocladiinae Midge 2
Cheumatopsyche Net-Spinning Caddisfly 2
Tvetenia Non-Biting Midges 2
Oulimnius Riffle Beetle 2
Prostoia Spring Stonefly 2
Optioservus Riffle Beetle 1
Trissopelopia Non-Biting Midges 1
Conchapelopia Non-Biting Midges 1
Neophylax Caddisfly 1
Tipula Crane Fly 1
Chrysops Deerfly 1
Stenonema Flatheaded Mayfly 1
Gordiidae Horsehair Worm 1
Leuctra  Rolled-Winged Stonefly 1
Simulium Black 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.