Dam panoramic Traditional Cache
Hidden : 4/24/2013
Difficulty:
2.5 out of 5
Terrain:
2 out of 5

Size: Size: small (small)

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Geocache Description:


Marathon’s dam was constructed from 1926 until 1929 by the US Company ULEN, while in 1931 started the water supply of Athens. The dam is made of concrete and is fully lined with Pentelic marble, giving to it a unique characteristic in worldwide level. The lake collects water from streams Varnava and Charadros. Charadros stems from Parnitha at the area of Mola (see also cache GC25Z81). The area around the lake is full of pine trees and is offered for a walk or cycling. After the 2009 fire, the landscape has changed to worst but some areas, thankfully, escaped the disastrous fire. While you are doing your favorite outdoor activity please respect the environment.
Specifications of Marathon’s Dam:
  • Dam’s type: gravity from concrete
  • Dam’s maximum height: 54m
  • Dam’s maximum height (from foundation level): 62.5m
  • Maximum width at the base: 48m
  • Crest width: 4.5m
  • Crest length: 285m
  • Crest altitude: 227m above sea level
  • Base altitude: 173m above sea level
  • Overflow level: 223m above sea level
  • Overflow capacity: 520m3/sec
  • Dam’s volume: 180,000m3 of concrete and masonry
Specifications of Marathon’s reservoir:
  • Total area at overflow level: 2.45km2
  • Basin’s area: 118km2
  • Average inflow: 21 million m3 of water per year
  • Average rainfall: 680mm/year
  • Average outflow: 19 million m3 of water per year
  • Maximum capacity: 41 million m3
  • Maximum usable volume: 34 million m3
  • Minimum operating level of intake tower: 186m above sea level
At the north side of the dam is a cafeteria called “Fragma”, dam in Greek, where you can enjoy your coffee with a picturesque view of the lake, especially during sunset.
The cache is a small plastic box with a logbook, a geocache declaration, a pencil and few items to trade, in a place not too far from the road, with a panoramic view of the dam.
Enjoy!

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