The Little Patuxent River

The Little Patuxent River (HMDI6)

Location: Columbia, MD 21046 Howard County
Country: United States of America

N 39° 9.945', W 76° 50.468'

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Inscription

Patuxent Branch Trail

River Facts

* The Little Patuxent River begins in Howard County near Alpha Ridge.
* It is joined by the Middle Patuxent River near Savage.
* It continues south to join the Patuxent River near Crofton in Anne Arundel County.
* The total length of the Little Patuxent river is 45 miles.
* The Little Patuxent River flows 25 miles in Howard County.
* The median daily flow at Guilford is 44 cubic feet per second.
* The greates flow at Guilford was during Hurricane Agnes in 1972, at 12,400 cubic feet per second.
* The average depth of the river at Guilford is 2.5 feet.
* The highest flooding at Guilford was 18.38 feet during Hurricane Agnes.

[picture of Little Patuxent River] The Little Patuxent River today provides scenic views and recreation, as well as habitat for fish and wildlife. Once it provided power for sawmills, gristmills, and cotton mills.

What is a Watershed?

The total land area that catches rain and drains it to a specific body of water is called a watershed. it is similar to a basin that catches water, and then pours it into a larger basin. Each small stream or tributary has its own watershed, which is part of a larger watershed of a bigger body of water.

Nature, not man, defines the boundaries of a watershed. Anywhere you stand on the earth you are standing in a watershed. Right now you are standing in the Little Patuxent River Watershed. This watershed is part of a the even larger Patuxent River Watershed, and that is part of the far greater Chesepeakde Bay Watershed. So you are standing in several watersheds at once!

Watersheds are important to the health of the body of water that they supply, and that, in turn, affects the total environment. Everything that contaminates water in a watershed can pollute the river or lake at the end of its journey. A drop of water falling here will find its way to the Chesapeake Bay.

[map of Little Patuxent River Watershed] These lakes are all on tributaries of the Little Patuxent River:
* Centennial Lake
* Lake Elkhorn
* Lake Kittimaqundi
* Wilde Lake


The name "Patuxent" comes from the Algonquian word for "rapids."

Watershed areas

The Little Patuxent Watershed totals 103 square miles. Its area within Howard County is 51.2 square miles.

The Patuxent Watershed totals 956 square miles. Its area within Howard County is 185 square miles.

The Chesapeake Bay Watershed totals 64,000 square miles. It covers all of Howard County: 250 square miles. It covers almost all of Maryland: 12,000 square miles. It covers parts of 6 states: NY, PA, DE, MD, VA, WV.

What is the "Fall Line"? As rivers flow from the higher Piedmont Plateau to the lower Coastal Plain in Maryland, their descent creates many waterfalls and rapids. This edge, which generally follows interstate Route 95, has long been called the Fall Line. It marks the point where upstream navigation becomes difficult and the energy of the falling water can be harnessed to power mills and factories. Often the water has carved a narrow gorge through the harder rocks. Between Guilford and Savage, the river drops nearly 60 feet.

[map of the Chesapeake Bay Watershed] The Chesapeake Bay Watershed covers 1.7% of the landmass of the United States, yet it contains 5.2% of the total population.

[map of Howard County watersheds] 80% of Howard County is in the Patuxent River Watershed, and 20% is in the Patapsco River watershed.
Details
HM NumberHMDI6
Tags
Year Placed2003
Placed ByHoward County Department of Recreation and Parks
Marker ConditionNo reports yet
Date Added Sunday, September 14th, 2014 at 3:46am PDT -07:00
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Locationbig map
UTM (WGS84 Datum)18S E 340940 N 4336784
Decimal Degrees39.16575000, -76.84113333
Degrees and Decimal MinutesN 39° 9.945', W 76° 50.468'
Degrees, Minutes and Seconds39° 9' 56.70" N, 76° 50' 28.08" W
Driving DirectionsGoogle Maps
Area Code(s)410, 443, 301, 240
Closest Postal AddressAt or near 601-699 Patuxent Branch Trail, Columbia MD 21046, US
Alternative Maps Google Maps, MapQuest, Bing Maps, Yahoo Maps, MSR Maps, OpenCycleMap, MyTopo Maps, OpenStreetMap

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