MBSS Site Summary for: PRWA-125-R-2002

Site Photos

Field photo showing stream conditions at site PRWA-125-R-2002-1 (Opens in a new window) Field photo showing stream conditions at site PRWA-125-R-2002-2 (Opens in a new window) Field photo showing stream conditions at site PRWA-125-R-2002-3 (Opens in a new window) Field photo showing stream conditions at site PRWA-125-R-2002-4 (Opens in a new window)

Located on DITCH RUN UT in the Potomac River WA Cnty watershed, 8-digit code: 02140501.
This stream was visited in the spring on 3/25/2002 and again in the summer on 7/10/2002.

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 - 3.0 / 5.0

Land Use

Land use can provide important information for determining stream health.
(Hint: Screen readers will announce definitions; mouse users can hover over dotted text.)
Catchment area 91 acres 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 3 %
Agricultural Land Use 82 %
Forested Land Use 10 %


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:
pH (lab) 7.15
Alkalinity
(acid neutralizing capacity) 		336.2 µeq/L
Dissolved organic carbon (DOC) 2.3 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:
Fish data is unavailable or no fish observed.

Amphibians and Reptiles:
Eastern Box Turtle
Pickerel Frog

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 27
Leuctridae Rolledwinged Stonefly 12
Ceratopogon Biting Midge 12
Prosimulium Black Fly 9
Ameletus Combmouthed Minnow Mayfly 8
Pseudolimnophila Crane Fly 8
Leptophlebiidae Pronggilled Mayfly 6
Ephemerella Sulphur Mayfly 5
Tanypodinae Non-Biting Midges 5
Pisidiidae Pill Clam 4
Parametriocnemus Non-Biting Midges 3
Tipula Crane Fly 3
Capniidae Small Winter Stonefly 3
Prostoia Spring Stonefly 2
Isoperla Stripetail Stonefly 2
Corynoneura Non-Biting Midges 2
Micropsectra Non-Biting Midges 2
Orthocladius Non-Biting Midges 1
Paraphaenocladius Non-Biting Midges 1
Dasyhelea 1
Perlodidae Perlodid Stonefly 1
Isotomurus Elongate-Bodied Springtail 1
Pycnopsyche Great Autumn Brown Sedge Caddisfly 1
Tabanidae Horse Fly 1
Eurylophella Mayfly 1
Simulium Black Fly 1
Paraleptophlebia Blue Quill Mayfly 1
Ceratopogonidae Biting Midge 1
Hydroporus Water Beetle 1
Ectopria Water Penny Beetle 1
Optioservus Riffle Beetle 1
Microvelia Small Water Strider Beetle 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.