Whats in a name?
I'm so confused!

Lake, Pond, Reservoir, Pool, Impoundment
       On this website we use LAKE, POND, RESERVOIR, POOL, and IMPOUNDMENT.  There are two kinds of Reservoirs. Reservoirs that are built for flood control and reservoirs that are used for either water supplies or back-up water supplies.  Impoundments are basically areas that have been dammed up on a river for either electrical or other commercial uses.  A some examples of an impoundments are:
Berkshire County - Mill Pond an impoundment of Hubbard Brook
Franklin County - Sherman Reservoir a impoundment on the Deerfield River.
Hampshire County - Ware River Reservoir in the town of Ware
Hampden County - Red Bridge Pool also called Chicopee River Reservoir 
Yes I know, we are now using impoundment with the words RIVER, BROOK, RESERVOIR and even POOL.  If you're mind is now jello thinking about this you can be assured that others are feeling the same way.  But wait a  minute!  Whats the difference between Lake and Pond?

Lake or Pond?

       We believe that most people have asked the question: What is the difference between a Lake and a Pond?  Even after researching this we are still confused.  We present below some information I gathered and you can decide for yourself.  

        The technical distinction between a pond and a lake has not been universally standardized. Limnologists and freshwater biologists have proposed formal definitions for pond, in part to include 'bodies of water where light penetrates to the bottom of the waterbody,' 'bodies of water shallow enough for rooted water plants to grow throughout,' and 'bodies of water which lack wave action on the shoreline.' Each of these definitions has met with resistance or disapproval, as the defining characteristics are each difficult to measure or verify. Accordingly, some organizations and researchers have settled on technical definitions of pond and lake which rely on size alone.
       Even among organizations and researchers who distinguish lakes from ponds by size alone, there is no universally recognised standard for the maximum size of a pond. The international Ramsar wetland convention sets the upper limit for pond size as 8 hectares (20 acres), but biologists have not universally adopted this convention. Researchers for the British charity Pond Conservation have defined a pond to be 'a man-made or natural waterbody which is between 1 m2 and 20,000 m2 in area (2 ha or ~5 acres), which holds water for four months of the year or more.' Other European biologists have set the upper size limit at 5 ha (12 acres).
       In practice, a body of water is called a pond or a lake on an individual basis, as conventions change from place to place and over time. In North America, even larger bodies of water have been called ponds; for example, Walden Pond in Concord, Massachusetts measures 61 acres, nearby Spot Pond is 340 acres, while in between is Crystal Lake at 33 acres. There are numerous examples in other states of bodies of water less than 10 acres  being called lakes. As the case with Crystal Lake shows, marketing purposes may be the driving factor behind some names.

Let's see what the Dictionaries say and you can make up your own mind.  
LAKE - Defined

Merriam-Webster  - a considerable inland body of standing water; also :  a pool of other liquid (as lava, oil, or pitch)
Middle English, from Old English, Anglo-French, & Latin; Old English lacu stream, pool, from Latin lacus lake, pool, pit & Anglo-French lac pit, from Latin lacus; akin to Old English lagu sea, Greek lakkos pond
First Known Use: 12th century
Dictionary.com - 
1. a body of fresh or salt water of considerable size, surrounded by land.
2. any similar body or pool of other liquid, as oil.

Merriam-Webster –
  1. a place where something is kept in store: as:  an artificial lake where water is collected and kept in quantity for useb :  a part of an apparatus in which a liquid is held:  supply, store 
  2. an extra supply :  reserve
  3. an organism in which a parasite that is pathogenic for some other species lives and multiplies usually without damaging its host
French réservoir, from Middle French, from reserver
First Known Use: 1690

  1. a natural or artificial place where water is collected and stored for use, especially water for supplying a community, 
    irrigating land, furnishing power, etc.
  2. a receptacle or chamber for holding a liquid or fluid.
  3. Geology. See under pool1(def 6).
  4. Biology. a cavity or part that holds some fluid or secretion.
  5. a place where anything is collected or accumulated in great amount.
  6. a large or extra supply or stock; reserve:
  7. a reservoir of knowledge.


Merriam-Webster - 
  1.  the act of impounding :  the state of being impounded
  2.  a body of water formed by impounding
First Known Use of impoundment
circa 1665

  1. a body of water confined within an enclosure, as a reservoir.
  2. the act of impounding:
  3. the impoundment of alien property.
  4. the condition of being impounded.

POOL - Defined

Merriam-Webster - 
    1.  a small and rather deep body of usually fresh water 
    2.  a quiet place in a stream 
    3.  a: a body of water forming above a dam
      ​ b :  something resembling a pool 
  2. a small body of standing liquid
  3. a continuous area of porous sedimentary rock that yields petroleum or gas
Middle English, from Old English pōl; akin to Old High German pfuol pool
First Known Use: before 12th century

  1. a small body of standing water; pond.
  2. a still, deep place in a stream.
  3. any small collection of liquid on a surface: a pool of blood.
  4. a puddle.
  5. swimming pool.
  6. a subterranean accumulation of oil or gas held in porous andpermeable sedimentary rock (reservoir)