MBSS Site Summary for: PRUN-306-R-2016

Site Photos

Field photo showing stream conditions at site PRUN-306-R-2016-MidpointDownstream (Opens in a new window) Field photo showing stream conditions at site PRUN-306-R-2016-MidpointUpstream (Opens in a new window)

Located on Lostland Run in the Potomac River U N Branch watershed, 8-digit code: 02141005.
This stream was visited in the spring on 4/14/2016 and again in the summer on 9/6/2016.

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 Fair - 3.5 / 5.0
Benthic IBI Good - 4.5 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 6,500 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 3.6 %
Agricultural Land Use 10.2 %
Forested Land Use 80.9 %


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 12/20 (Suboptimal)
Velocity/Depth Diversity 15/20 (Suboptimal)
Pool Quality
Pool Extent = 51 meters 		17/20 (Optimal)
Riffle Quality
Riffle Extent = 31 meters 		15/20 (Suboptimal)
Shading 75 %
Embeddedness 0 %


Stream Water Quality:
pH (lab) 7.47
Alkalinity
(acid neutralizing capacity) 		286.6 µeq/L
Dissolved organic carbon (DOC) 0.9926 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 2 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 22
Rainbow Trout 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
No amphibians and reptiles noted.

Crayfish:
No crayfish noted.

Exotic Plants:
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Epeorus Mayfly 23
Amphinemura Spring Stonefly 18
Micropsectra Non-Biting Midges 14
Leptophlebiidae Pronggilled Mayfly 7
Sweltsa Stonefly 6
Chloroperlidae Green Stonefly 6
Tanytarsus Non-Biting Midges 5
Hydropsyche Net-Spinning Caddisfly 5
Diplectrona Net-Spinning Caddisfly 4
Drunella Blue-Winged Olive Mayfly 4
Perlidae Common Stonefly 3
Baetis Blue-Winged Olive Mayfly 3
Tallaperla Roach-Like Stonefly 3
Baetidae Small Minnow Mayfly 2
Maccaffertium March Brown And Cahill Mayfly 2
Cheumatopsyche Net-Spinning Caddisfly 2
Cinygmula Dark Red Quill Mayfly 2
Pteronarcys Giant Stonefly 2
Acroneuria Golden Stoneflies 1
Ameletus Combmouthed Minnow Mayfly 1
Neoplasta 1
Leuctra  Rolled-Winged Stonefly 1
Prosimulium Black Fly 1
Diphetor Mayfly 1
Lumbriculidae Worm 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.