MBSS Site Summary for: PRUN-302-C-2000

Site Photos

Field photo showing stream conditions at site PRUN-302-C-2000-01 (Opens in a new window) Field photo showing stream conditions at site PRUN-302-C-2000-02 (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 4/13/2000 and again in the summer on 7/25/2000.

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 Fair - 3.5 / 5.0
Benthic IBI Good - 4.3 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 6,570 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 0.1 %
Agricultural Land Use 11.2 %
Forested Land Use 87.3 %


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

Physical Stream Habitat
Instream Habitat 18/20 (Optimal)
Epifaunal Substrate 17/20 (Optimal)
Velocity/Depth Diversity 15/20 (Suboptimal)
Pool Quality
Pool Extent = 45 meters 		19/20 (Optimal)
Riffle Quality
Riffle Extent = 40 meters 		17/20 (Optimal)
Shading 55 %
Embeddedness 15 %
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:
Water temperature 14.6 ° C
Dissolved oxygen (DO) 9.5 mg/L
pH (lab) 7.28
Conductivity 200 µmho/cm
Alkalinity
(acid neutralizing capacity) 		222.9 µeq/L
Dissolved organic carbon (DOC) 0.8 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 6 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 36
Creek Chub 4
Green Sunfish 4
Central Stoneroller 2
Potomac Sculpin 2
White Sucker 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Red-Spotted Newt

Crayfish:
No crayfish noted.

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Amphinemura Spring Stonefly 24
Acentrella Tiny Blue-Winged Olive Mayflies 22
Epeorus Mayfly 12
Chloroperlidae Green Stonefly 7
Baetidae Small Minnow Mayfly 7
Micropsectra Non-Biting Midges 6
Perlidae Common Stonefly 5
Sweltsa Stonefly 4
Hydropsyche Net-Spinning Caddisfly 4
Leuctridae Rolledwinged Stonefly 3
Parametriocnemus Non-Biting Midges 2
Hexatoma Crane Fly 2
Ameletus Combmouthed Minnow Mayfly 2
Pteronarcys Giant Stonefly 2
Acroneuria Golden Stoneflies 1
Stenonema Flatheaded Mayfly 1
Rhyacophila Free-Living Caddisfly 1
Dubiraphia Riffle Beetle 1
Diplectrona Net-Spinning Caddisfly 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.