MBSS Site Summary for: BRIG-308-X-2017

Site Photos

Field photo showing stream conditions at site BRIG-308-X-2017-MidpointDownstream (Opens in a new window) Field photo showing stream conditions at site BRIG-308-X-2017-MidpointUpstream (Opens in a new window)

Located on Patuxent River in the Brighton Dam watershed, 8-digit code: 02131108.
This stream was visited in the spring on 3/29/2017.

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 N R
Benthic IBI Fair - 3.7 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area No data available Cows standing in a stream at a site with high agricultural land use. Cows survey the sampling procedure at this extreme example of a highly agriculturalized site.
Urban Land Use 6.9 %
Agricultural Land Use 50.2 %
Forested Land Use 40.2 %


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

Physical Stream Habitat
Instream Habitat not sampled
Epifaunal Substrate not sampled
Velocity/Depth Diversity not sampled
Pool Quality not sampled
Riffle Quality not sampled
Shading not sampled
Embeddedness not sampled


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 1 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
No amphibians and reptiles noted.

Crayfish:
Cambarus bartonii bartonii

Exotic Plants:
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
CHEUMATOPSYCHE Net-Spinning Caddisfly 38
ISONYCHIA Slate Drake Mayfly 23
ORTHOCLADIUS Non-Biting Midges 12
HYDROPSYCHE Net-Spinning Caddisfly 11
MACCAFFERTIUM March Brown And Cahill Mayfly 6
CHIMARRA Fingernet Caddisfly 4
ANTOCHA Crane Fly 3
TANYTARSUS Non-Biting Midges 3
EUKIEFFERIELLA Non-Biting Midges 3
RHEOCRICOTOPUS Non-Biting Midges 3
MICROTENDIPES Non-Biting Midges 2
AMPHINEMURA Spring Stonefly 2
CORYDALUS Dobsonfly 2
CRICOTOPUS Non-Biting Midges 2
PARAMETRIOCNEMUS Non-Biting Midges 2
PARATANYTARSUS Non-Biting Midges 2
POLYPEDILUM Non-Biting Midges 1
BRILLIA Non-Biting Midges 1
NEMATODA Nematode 1
DIBUSA 1
NAIDIDAE Aquatic Worm 1
PROSIMULIUM Black Fly 1
SIMULIUM Black Fly 1
PSEPHENUS Water Penny 1
PERLODIDAE Perlodid Stonefly 1
RHEOTANYTARSUS 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.