Teays River
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The Teays River (pronounced taze) was a major preglacial river that drained much of the present
Ohio River The Ohio River () is a river in the United States. It is located at the boundary of the Midwestern and Southern United States, flowing in a southwesterly direction from Pittsburgh, Pennsylvania, to its river mouth, mouth on the Mississippi Riv ...
watershed, but took a more northerly downstream course. Traces of the Teays across northern
Ohio Ohio ( ) is a U.S. state, state in the Midwestern United States, Midwestern region of the United States. It borders Lake Erie to the north, Pennsylvania to the east, West Virginia to the southeast, Kentucky to the southwest, Indiana to the ...
and
Indiana Indiana ( ) is a U.S. state, state in the Midwestern United States, Midwestern region of the United States. It borders Lake Michigan to the northwest, Michigan to the north and northeast, Ohio to the east, the Ohio River and Kentucky to the s ...
are represented by a network of river valleys. The largest still existing contributor to the former Teays River is the
Kanawha River The Kanawha River ( ) is a tributary of the Ohio River, approximately 97 mi (156 km) long, in the U.S. state of West Virginia. The largest inland waterway in West Virginia, its watershed has been a significant industrial region of th ...
in
West Virginia West Virginia is a mountainous U.S. state, state in the Southern United States, Southern and Mid-Atlantic (United States), Mid-Atlantic regions of the United States.The United States Census Bureau, Census Bureau and the Association of American ...
, which is itself an extension of the New River. The name "Teays," from the much smaller Teays Valley still extant above the surface, has been associated with the river and the remainder of its related buried valley since 1910.The Glacial Boundary in Western Pennsylvania, Ohio, Kentucky, Indiana, and Illinois; George Frederick Weight; Bulletin of the United States Geological Survey No. 58; Washington, Government Printing Office; 1890; pg 86-88 The more appropriate name would be the Ancestral Kanawha Valley.Glacial Geology of Wabash County, Indiana: William J. Wayne and William D. Thornbury; Indiana Department of Conservation, Geological Survey; Bulletin No. 5; Bloomington, Indiana; 1951 The term Teays is used when discussing the buried portion of the Ancestral Kanawha River. The Teays was comparable in size to the Ohio River. The River's headwaters were near
Blowing Rock, North Carolina Blowing Rock is a town in Watauga County, North Carolina, Watauga and Caldwell County, North Carolina, Caldwell counties in the U.S. state of North Carolina. The population was 1,376 at the 2020 census. The Caldwell County portion of Blowing Roc ...
; it then flowed through
Virginia Virginia, officially the Commonwealth of Virginia, is a U.S. state, state in the Southeastern United States, Southeastern and Mid-Atlantic (United States), Mid-Atlantic regions of the United States between the East Coast of the United States ...
,
West Virginia West Virginia is a mountainous U.S. state, state in the Southern United States, Southern and Mid-Atlantic (United States), Mid-Atlantic regions of the United States.The United States Census Bureau, Census Bureau and the Association of American ...
, Ohio, Indiana, and
Illinois Illinois ( ) is a U.S. state, state in the Midwestern United States, Midwestern United States. It borders on Lake Michigan to its northeast, the Mississippi River to its west, and the Wabash River, Wabash and Ohio River, Ohio rivers to its ...
. (Hansen, 1995).Teays River; ES 767 Quaternary Geology, Fall 2011; Wesley C. Smith; Emporia State University, Earth Science Department: Webpage submitted on November 28, 2011 The largest tributary to the Teays River was the Old Kentucky River (Teller 1991), which extended from southern Kentucky through Frankfort and subsequently flowed northeast, meeting other tributaries and eventually joining the Teays.


Creation

Scattered
glacial erratic A glacial erratic is a glacially deposited rock (geology), rock differing from the type of country rock (geology), rock native to the area in which it rests. Erratics, which take their name from the Latin word ' ("to wander"), are carried by gla ...
s in northeastern Kentucky and southern Ohio are pre- Kansan in age. Only the Nebraskan is recognized as earlier than Kansan; these have been designated as remnants of deposits left by the Nebraskan glacier. The ice sheet overrode the preglacial Teays creating ponds or
glacial lake A glacial lake is a body of water with origins from glacier activity. They are formed when a glacier erodes the land and then melts, filling the depression created by the glacier. Formation Near the end of the last glacial period, roughly 10,0 ...
s. The back up of water diverted the upper basin over the surrounding divides into the preglacial
Ohio River The Ohio River () is a river in the United States. It is located at the boundary of the Midwestern and Southern United States, flowing in a southwesterly direction from Pittsburgh, Pennsylvania, to its river mouth, mouth on the Mississippi Riv ...
. Thus the ‘deep stage’ more likely is post-Nebraskan and pre-Kansan in age rather than preglacial. With the withdrawal of the Nebraskan glacier, which caused integration of the upper Kanawha (Teays) with the preglacial Ohio, a vastly shortened, unnamed descendant of the Teays apparently headed somewhere in west-central Ohio and cut the ‘deep stage’ across Ohio, Indiana, and Illinois during the long Aftonian interglacial stage, which followed. If the sequence of
bedrock In geology, bedrock is solid rock that lies under loose material ( regolith) within the crust of Earth or another terrestrial planet. Definition Bedrock is the solid rock that underlies looser surface material. An exposed portion of bed ...
formations of northern Indiana were exposed, the extensive cliffs along the ‘deep stage’ of the Teays and its tributaries would provide a clearer understanding of the
stratigraphy Stratigraphy is a branch of geology concerned with the study of rock layers (strata) and layering (stratification). It is primarily used in the study of sedimentary and layered volcanic rocks. Stratigraphy has three related subfields: lithost ...
of northern Indiana. The entire
Silurian The Silurian ( ) is a geologic period and system spanning 23.5 million years from the end of the Ordovician Period, at million years ago ( Mya), to the beginning of the Devonian Period, Mya. The Silurian is the third and shortest period of t ...
section below the Liston Creek limestone and a few feet of the upper
Ordovician The Ordovician ( ) is a geologic period and System (geology), system, the second of six periods of the Paleozoic Era (geology), Era, and the second of twelve periods of the Phanerozoic Eon (geology), Eon. The Ordovician spans 41.6 million years f ...
probably would be visible in the vicinity of La Fontaine. In Wabash County the part of the Teays Valley above the ‘deep stage’ consists of broad terraces at an altitude of about . From this terrace level the bedrock rises gradually to the on the Lexington pene-plain surface. These terraces probably correspond in age to an erosional surface in the unglaciated areas known as the Parker strath, which was the result an erosion cycle that ended before the Kansan phase of the
pre-Illinoian The Pre-Illinoian Stage is used by Quaternary geologists for the early and middle Pleistocene glacial and interglacial periods of geologic time in North America from ~2.5–0.2  Ma (million years ago). North America As the oldest stage in ...
glaciation. More recent correlation places its age as pre-Nebraskan. The Parker strath probably represents an erosional level existent at the beginning of the
Pleistocene The Pleistocene ( ; referred to colloquially as the ''ice age, Ice Age'') is the geological epoch (geology), epoch that lasted from to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was fin ...
before the rejuvenation associated with, and following, the Nebraskan glaciation. The general appearance and width of the strath terrace along the Teays Valley in Indiana indicates that it represents only a slight rejuvenation following the Lexington cycle. In Virginia and West Virginia, the Teays River flowed in the valleys of the modern New River and
Kanawha River The Kanawha River ( ) is a tributary of the Ohio River, approximately 97 mi (156 km) long, in the U.S. state of West Virginia. The largest inland waterway in West Virginia, its watershed has been a significant industrial region of th ...
(Hansen, 1995). The river then flowed west to Scioto County, Ohio, and to Ross County, Ohio, near Chillicothe. The valley then disappears under glacial sediments but can be tracked using water well yields and other means (Hansen, 1995). A total of seven
till image:Geschiebemergel.JPG, Closeup of glacial till. Note that the larger grains (pebbles and gravel) in the till are completely surrounded by the matrix of finer material (silt and sand), and this characteristic, known as ''matrix support'', is d ...
s have been identified within the Teays River Valley (Andrews, 2004). In portions of Ohio, the buried valley is up to wide and lies beneath of glacial sediments (Hansen, 1995).


Course

The Teays River was a north- and northwest-flowing river existing before the
Pleistocene The Pleistocene ( ; referred to colloquially as the ''ice age, Ice Age'') is the geological epoch (geology), epoch that lasted from to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was fin ...
Ice Ages – before 2.5 million years ago. The Teays flowed through southwest
West Virginia West Virginia is a mountainous U.S. state, state in the Southern United States, Southern and Mid-Atlantic (United States), Mid-Atlantic regions of the United States.The United States Census Bureau, Census Bureau and the Association of American ...
, between
Kentucky Kentucky (, ), officially the Commonwealth of Kentucky, is a landlocked U.S. state, state in the Southeastern United States, Southeastern region of the United States. It borders Illinois, Indiana, and Ohio to the north, West Virginia to the ...
and Ohio, and northwest across Ohio (see illustration). The Teays then flowed under what is present-day
Lafayette, Indiana Lafayette ( ) is a city in and is the county seat of Tippecanoe County, Indiana, United States, located northwest of Indianapolis and southeast of Chicago. According to the 2020 United States census, 2020 census, the population of Lafayette ...
, and just north of
Champaign, Illinois Champaign ( ) is a city in Champaign County, Illinois, United States. The population was 88,302 at the 2020 census. It is the List of municipalities in Illinois, tenth-most populous municipality in Illinois and the fourth most populous city in ...
, and likely was coincident with the lower present-day
Illinois River The Illinois River () is a principal tributary of the Mississippi River at approximately in length. Located in the U.S. state of Illinois, the river has a drainage basin of . The Illinois River begins with the confluence of the Des Plaines ...
. The Teays River was dissected and largely wiped away by advancing
glacier A glacier (; or ) is a persistent body of dense ice, a form of rock, that is constantly moving downhill under its own weight. A glacier forms where the accumulation of snow exceeds its ablation over many years, often centuries. It acquires ...
s and their
meltwater Meltwater (or melt water) is water released by the melting of snow or ice, including glaciers, glacial ice, tabular icebergs and ice shelf, ice shelves over oceans. Meltwater is often found during early spring (season), spring when snow packs a ...
. These glaciers were the massive continental ice sheets that began to cover large parts of Ohio and other states downstream (west) of Ohio between 2.5 and 3 million years ago. Their presence caused lakes ( Lake Tight,
Lake Monongahela Lake Monongahela was a proglacial lake in western Pennsylvania, West Virginia, and Ohio. It formed during the Pre-Illinoian ice epoch when the advance of the ice sheet southwards blocked the drainage of these valleys to the north. The lake form ...
, etc.) to form along the Teays and associated rivers. Overflow of these lakes into nearby, lower valleys caused large floods and new rivers to form. These new rivers – formed about 2 million years ago – included the present-day
Ohio Ohio ( ) is a U.S. state, state in the Midwestern United States, Midwestern region of the United States. It borders Lake Erie to the north, Pennsylvania to the east, West Virginia to the southeast, Kentucky to the southwest, Indiana to the ...
and Scioto Rivers, which are associated with the most direct evidence of the Teays.


West Virginia

The Teays River was the main stream of a preglacial river system. Its headwaters was near the eastern escarpment of the Blue Ridge, at the edge of the
Piedmont Plateau The Piedmont ( ) is a plateau region located in the Eastern United States. It is situated between the Atlantic Plain and the Blue Ridge Mountains, stretching from New York in the north to central Alabama in the south. The Piedmont Province i ...
in
North Carolina North Carolina ( ) is a U.S. state, state in the Southeastern United States, Southeastern region of the United States. It is bordered by Virginia to the north, the Atlantic Ocean to the east, South Carolina to the south, Georgia (U.S. stat ...
and
Virginia Virginia, officially the Commonwealth of Virginia, is a U.S. state, state in the Southeastern United States, Southeastern and Mid-Atlantic (United States), Mid-Atlantic regions of the United States between the East Coast of the United States ...
.The Teays River; Karl Ver Steeg: The Ohio Journal of Science; Vol. XLVI, November, 1946 No. 6; College of Wooster; Wooster, Ohio The New River, the southernmost headwater of the Teays River, arises in
Watauga County, North Carolina Watauga County ( )
from the North Carolina Collection's website at the University of North Carol ...
, in the Blue Ridge. This area is northeast of Asheville. It flows northeasterly direction for some distance and after making a right-angled bend, it trends northward until it makes a 90° turn to the west and joins the Gauley River. Here, it takes a new name as the
Kanawha River The Kanawha River ( ) is a tributary of the Ohio River, approximately 97 mi (156 km) long, in the U.S. state of West Virginia. The largest inland waterway in West Virginia, its watershed has been a significant industrial region of th ...
. This continues to the northwest to Charleston. As New River, it was joined by the Greenbrier and
Bluestone Bluestone is a cultural or commercial name for a number of natural dimension stone, dimension or building stone varieties, including: * basalt in Victoria (Australia), Victoria, Australia, and in New Zealand * diabase, dolerites in Tasmania, ...
rivers. At Charleston, the Kanawha is joined by the Elk River. In its course, the Teays River cut across the folded Appalachians, a remarkable feature. The valley varies in width, from , an average of . A mile wide valley can be observed without a stream from St. Albans to Huntington. No doubt, a large stream once occupied this abandoned valley. Approaching Huntington, the Guyandotte River joins the general path of the ancient river beginning at Barboursville and follows it north until the former river veers west over the south hills of Huntington and joins the Ohio River Valley heading west towards Kentucky. The Ohio River follows the Teays path until leaving the Ohio River in the north end of Catlettsburg where it veers away just south of Ashland to Wheelersburg. The Ohio River has a floor of the original valley as shown by the silted flats south of Ashland and the terraces between Franklin Furnace and Wheelersburg. At Wheelersburg, the Teays River flowed northward past Minford, Stockdale and Beaver, to Waverly, through a high-level, broad, well-defined open valley.


Ohio

The Teays system in Ohio is known as the Parker Strath. The Teays River extended across Ohio in a northwesterly direction from
Huntington, West Virginia Huntington is a city in Cabell County, West Virginia, Cabell and Wayne County, West Virginia, Wayne counties in the U.S. state of West Virginia. The County seat, seat of Cabell County, the city is located at the confluence of the Ohio River, O ...
. It splits away from the
Ohio River The Ohio River () is a river in the United States. It is located at the boundary of the Midwestern and Southern United States, flowing in a southwesterly direction from Pittsburgh, Pennsylvania, to its river mouth, mouth on the Mississippi Riv ...
near Sciotodale/Wheelersburg and goes north and west through Minford, Stockdale, and Beaver before merging with the
Scioto River The Scioto River ( ) is a river in central and southern Ohio more than in length. It rises in Hardin County, Ohio, Hardin County just north of Roundhead, Ohio, flows through Columbus, Ohio, where it collects its largest tributary, the Olent ...
valley near Waverly/Piketon. This is clearly visible on aerial and
satellite imagery Satellite images (also Earth observation imagery, spaceborne photography, or simply satellite photo) are images of Earth collected by imaging satellites operated by governments and businesses around the world. Satellite imaging companies sell im ...
. However, its floor exists as broad upland flats, near Omega and Higby. The Scioto River has eroded and partially destroyed the Teays Valley from Waverly to Richmond Dale. It then continues northward to Chillicothe, where it disappears under a layering of Wisconsin glacial drift. Surveying under the glacial drift has revealed that it continues to the border of Indiana, near Grand Lake St. Marys. From Chillicothe, the Teays Valley can be traced in a northwesterly direction past Andersonville, crossing the southwestern part of Pickaway County, past Atlanta. From there, it crosses the northeast corner of Fayette County near Pancoastburg (former Waterloo), extending in a northwesterly direction past London in Madison County, to South Vienna in Clark County. Here the Teays was joined by the Groveport River, which drained central Ohio. From South Vienna, the Teays River continues in a westerly direction, to a point near Springfield, in Clark County, and thence northwestward past Boulusville and St. Paris in Champaign County, and Sidney, Anna and Botkins, in Shelby County, to the southeastern part of Washington Township in Auglaize County, where it was joined from the north by a tributary, Wapakoneta Creek. The Teays continued its course westward past the village of Mercer to Rockford. Continuing west to the Ohio-Indiana state line in Mercer County.


Indiana

The Teays Valley enters Indiana in Jay County and trends west. It turns to the northwest west of La Fontaine crossing Miami County south of the
Wabash River The Wabash River () is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map accessed May 13, 2011 river that drains most of the state of Indiana, and a significant part of Illinois, in the United ...
. Reaching under Tippecanoe County, it continues west through southern Benton County and into Illinois. (Fidlar, 1948, pp. 12–15).


Illinois

In Illinois, the valley is called the Mahomet.(Horberg, 1945, pp. 349–350). It trends westerly across the state, into the bedrock valley of the
Illinois River The Illinois River () is a principal tributary of the Mississippi River at approximately in length. Located in the U.S. state of Illinois, the river has a drainage basin of . The Illinois River begins with the confluence of the Des Plaines ...
.


Entrenched or ‘deep stage’

The ‘deep stage’ is used to describe the portion of the Teays Valley and other proglacial valleys carved into
bedrock In geology, bedrock is solid rock that lies under loose material ( regolith) within the crust of Earth or another terrestrial planet. Definition Bedrock is the solid rock that underlies looser surface material. An exposed portion of bed ...
in the Great Lakes region. This includes
Ohio Valley The Ohio River () is a river in the United States. It is located at the boundary of the Midwestern and Southern United States, flowing in a southwesterly direction from Pittsburgh, Pennsylvania, to its mouth on the Mississippi River in Cairo, ...
, near Madison, Indiana, before the Pleistocene; the Wabash Valley; and the Mississippi Valley. The floor of the Teays Valley in West Virginia is above the entrenched Kanawha and Ohio valley floors, and its bedrock floor is at least above them. The ‘deep stage’ apparently was cut mainly after the diversion of the upper Kanawha (Teays) drainage to the Ohio River (Stout, Ver Steeg, and Lamb, 1943, pp. 78–79). The lowest bedrock altitude obtained along the course of the Teays Valley across Wabash County was above sea level in the vicinity of La Fontaine. The average gradient of the Mahomet Valley above Beardstown, Illinois, is about 7 inches per mile (11.1 cm per kilometer). The altitude of the valley floor where it occurs beneath the present floodplain of the Wabash River should be about . The profile of the Teays is a gorge-like valley entrenched within a broad, old age valley. Steep walls high can be recognized along the buried trench. The inner valley has been called the ‘deep stage’ and is interglacial in age.


Tributaries


Ohio valleys

In the unglaciated area of southern Ohio, tributaries reflect the adjacent hills, which are considerably reduced: low gradients, broad valleys for the size of the modern streams, and
dendritic Dendrite derives from the Greek word "dendron" meaning ( "tree-like"), and may refer to: Biology *Dendrite, a branched projection of a neuron *Dendrite (non-neuronal), branching projections of certain skin cells and immune cells Physical *Dendri ...
patterns, all features of maturity. The largest of the tributaries in Ohio are the Marietta River, Hamden Creek, Albany River, Barlow Creek, Portsmouth River, Logan River, Bremen Creek, Putnam Creek, Cambridge River, Groveport River, Mechanicsburg Creek, and Wapakoneta Creek. The Cincinnati River flows northeastward from the southwest corner of Ohio to Dayton, to join the Teays River. At the time a divide existed between the preglacial Teays and the Miami watershed. Well records do not indicate a broad depression, which widens northward and is of sufficient size to have accommodated so large a stream as the Cincinnati River.


Preglacial Eel Valley

The Eel Valley in Wabash County, Indiana, follows a preglacial tributary of the Teays.(Horberg, 1945, p. 357). It too has a ‘deep stage’. At its junction with the Teays Valley it is just under above sea level. The tributary does not rise above through its length in Wabash County.


Illinois valleys

A tributary from the north enters the Mahomet Valley near Paxton, and important tributaries from the south, north of Danville, and in western Logan and Menard counties.


Demise

The Kanawha (Teays) was forced across a major divide when the return of the Laurentian ice sheet dammed the northward flow of the river. The diversion occurred during the Nebraskan or older pre-Illinoian glaciation. This is based on an analysis of the drift found in the valley from the Kansan or late pre-Illinoian age.


Present-day remnants

Visual remains of the Teays River today include large valleys containing only small streams (such as the mile-wide valley from Huntington to St. Albans in West Virginia and the valley extending north from Wheelersburg in Ohio). These valleys can be seen on aerial and satellite images. However, short segments of some such valleys are still occupied by the Ohio and Scioto Rivers. The Scioto flows through the valley in the opposite direction (south) to that taken by the Teays (north). The Teays River was dissected and largely wiped away by advancing glaciers and their meltwater. These glaciers were the massive continental ice sheets that began to cover large parts of Ohio and other states downstream (west) of Ohio between 2.5 and 3 million years ago. Their presence caused lakes ( Lake Tight,
Lake Monongahela Lake Monongahela was a proglacial lake in western Pennsylvania, West Virginia, and Ohio. It formed during the Pre-Illinoian ice epoch when the advance of the ice sheet southwards blocked the drainage of these valleys to the north. The lake form ...
, etc.) to form along the Teays and associated rivers. Overflow of these lakes into nearby, lower valleys caused large floods and new rivers to form. These new rivers – formed about 2 million years ago – included the present-day Ohio and Scioto Rivers, which are associated with the most direct evidence of the Teays. The present Ohio-Mississippi river system contains some distinctive
relict A relict is a surviving remnant of a natural phenomenon. Biology A relict (or relic) is an organism that at an earlier time was abundant in a large area but now occurs at only one or a few small areas. Geology and geomorphology In geology, a r ...
fish populations descended from
Jurassic Period The Jurassic ( ) is a geologic period and stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately 143.1 Mya. The Jurassic constitutes the second and m ...
fishes of the Teays, such as the primitive
bowfin The ruddy bowfin (''Amia calva'') is a ray-finned fish native to North America. Common names include mudfish, mud pike, dogfish, grindle, grinnel, swamp trout, and choupique. It is regarded as a relict, being one of only two surviving species ...
(''Amia calva'') and various gars ('' Lepisosteus'' spp).


Discovery

The Teays River was discovered and named for the village of Teays, West Virginia, by geologist William G. Tight (1865–1910).Wright, G. Frederick (1894), "The Cincinnati Ice Dam"
'' The Popular Science Monthly'', June issue, pp. 184–198.
The small community of Teays is in the "riverless" Teays Valley that used to be the bottom of the Teays River. In 1886, Gerard Fowke recognized that the gorge west of
Chillicothe, Ohio Chillicothe ( ) is a city in Ross County, Ohio, United States, and its county seat. The population was 22,059 at the 2020 United States census, 2020 census. Located along the Scioto River 45 miles (72 km) south of Columbus, Ohio, Columbus, ...
, was larger than Paint Creek would have created. He claimed that a large river would have had to exist to create the wide and deep valley. Conventional geologists did not support his claim.A Great Lost River Gets Its Due; Walter Sullivan; Science, The New York Times; November 29, 1983 In 1903 William G. Tight, a professor at
Denison University Denison University is a Private university, private liberal arts college in Granville, Ohio, United States. One of the earliest colleges established in the former Northwest Territory, Denison University was founded in 1831. It was first called ...
in
Granville, Ohio Granville is a Village (United States)#Ohio, village in Licking County, Ohio, United States. The population was 5,946 at the United States Census 2020, 2020 census. The village is located in a rural area of hills, known locally as the Welsh Hills ...
, saw the same type of valley and small stream running from Charleston to the Ohio River. It had only a minor water course beyond St. Albans, West Virginia. Here, the
Kanawha River The Kanawha River ( ) is a tributary of the Ohio River, approximately 97 mi (156 km) long, in the U.S. state of West Virginia. The largest inland waterway in West Virginia, its watershed has been a significant industrial region of th ...
turns north. Professor Tight sought in vain to persuade the geological community that this valley once carried a mighty river that continued across Ohio, Indiana, and Illinois through a valley now deeply buried under glacial deposits. He called it the Teays (pronounced taze) River, for a village in
West Virginia West Virginia is a mountainous U.S. state, state in the Southern United States, Southern and Mid-Atlantic (United States), Mid-Atlantic regions of the United States.The United States Census Bureau, Census Bureau and the Association of American ...
.


Namesakes

Teays Valley, West Virginia, and Ashville, Ohio's Teays Valley Local School District are named after the former river.


See also

* Lake Tight *
Lake Monongahela Lake Monongahela was a proglacial lake in western Pennsylvania, West Virginia, and Ohio. It formed during the Pre-Illinoian ice epoch when the advance of the ice sheet southwards blocked the drainage of these valleys to the north. The lake form ...


References


External links


NPS.gov: ''Geology of the New River''
{{Pleistocene Lakes and Seas Former rivers