Newest small-boat playground is the Salton Sea, a once-dry desert sinkhole which is now a salty lake 42 miles long and 235 feet below sea level.

Engineers estimated that once the project is finished, the tunnel will allow 500 million cubic meters of water to be drawn from the lake annually, while maintaining a constant water level.

Prior to the flood, speculators had purchased the abandoned reservoir, made less than well-engineered repairs to the old dam, raised the lake level, built cottages and a clubhouse, and created the South Fork Fishing and Hunting Club.

Gradual silting of the lake would seem to be occurring ; during low-water level, it is only about 1. 5 meters deep, while at flood stage it is between 10 and 15 meters deep.

The water level is regulated by the Mud Lock at the north end of the lake.

* The Hoya de Enriquillo or Neiba Valley is a remarkable valley, with a west-east direction, of low altitude ( on average 50 m with some points below sea level ) and with a great salt lake: the Enriquillo Lake.

It is around 40 meters below sea level and is a saline lake with a higher concentration of salt than the sea water.

From 70, 000 to 12, 000 years ago, the lake level was to higher than its current level.

This lake, called " Lake Lisan ", fluctuated dramatically, rising to its highest level around 26, 000 years ago, indicating a very wet climate in the Near East.

Around 10, 000 years ago, the lake level dropped dramatically, probably to levels even lower than today.

Previously this was thought not to be possible in reality, but in 2001 the lake was flooded almost a meter above maximum level ( and some upstream lakes like Glafsfjorden 3 metres ).

A seiche is a large, regular oscillation of a lake, caused by a water reverting to its natural level after being blown to one end of the lake.

The lake level has been regulated since the construction of the control weir where the lake discharges into the Blue Nile, which regulates the flow to the Blue Nile Falls ( Tis Abbai ) and hydro-power station.

The lake has a number of islands, whose numbers vary depending on the level of the lake ; it has fallen about in the last 400 years.

Short-term level changes are often caused by seiches that are particularly high when southwesterly winds blow across the length of the lake during storms.

Meanwhile, at the western end of the lake, Toledo experienced a similar drop in water level.

As the last lake in the Great Lakes ' hydrologic chain, Lake Ontario has the lowest mean surface elevation of the lakes at 243 feet ( 74 m ) above sea level ; lower than its neighbor upstream.

These water level fluctuations are an integral part of lake ecology, and produce and maintain extensive wetlands.

As the ice sheet retreated toward the north, it still dammed the St. Lawrence valley outlet, so that the lake surface was at a higher level.

When the ice finally receded from the St. Lawrence valley, the outlet was below sea level, and for a short time the lake became a bay of the Atlantic Ocean, in association with the Champlain Sea.

The lake varies seasonally from about above mean sea level.

ground meats are usually prepared from scrap meats at the local level, whereas irradiation at economic volumes of production would require central processing and distribution facilities.

This was because a shot that started at knee level would reveal the weapon of a cowboy, usually holstered at his waist.

The level of protection also usually varies considerably throughout the individual vehicle too, depending on the role of the vehicle and the likely direction of attack.

* Meteorological data: historically these were usually divisional level specialist teams but advances in technology mean they are now increasingly part of artillery units.

) or " plus or minus 1dB " ( roughly the sound level difference people usually can detect ).

In women, the breasts overlay the pectoralis major muscles and usually extend from the level of the second rib to the level of the sixth rib in the front of the human rib cage ; thus, the breasts cover much of the chest area and the chest walls.

Protracted symptoms tend to resemble those seen during the first couple of months of withdrawal but usually are of a sub acute level of severity.

This is two levels below a Bachelor's degree ( Level 6 in the MQF ) and students within the system who intend to further their studies to that level will usually seek entry into Advanced Diploma programs in public universities, polytechnics or accredited private providers.

Citizenship most usually relates to membership of the nation state, but the term can also apply at the subnational level.

* To provide resilience in the event of computer failure, multiple DNS servers are usually provided for coverage of each domain, and at the top level, thirteen very powerful root servers exist, with additional " copies " of several of them distributed worldwide via Anycast.

External views requirements may modify the design of the conceptual level ( i. e., add / remove entities and relationships ), but usually a well designed conceptual level for an application well supports most of the needed external views.

While the conceptual and external levels design can usually be done independently of any DBMS ( DBMS-independent design software packages exist, possibly with interfaces to some specific popular DBMSs ), the internal level design highly relies on the capabilities and internal data structure of the specific DBMS utilized ( see the Implementation section below ).

In the United States scholastic diving at the high school level is usually limited to one meter diving ( but some schools use three meter springboards .).

or A. Mus. D ) degrees in double bass performance provide an opportunity for advanced study at the highest artistic and pedagogical level, requiring usually an additional 54 + credit hours beyond a Master's degree ( which is about 30 + credits beyond a Bachelor's degree ).

To be eligible for a MD degree in the UK one must already hold an entry level medical degree ( for example, MBBS, MBChB, BMed, or a North American MD degree ) and usually must have had at least 5 years of post graduate training and experience.

The second level is a sort of implicit inference that usually follows immediately the episode of knowing p ( knowledge simpliciter ).

At the high school level, it is not uncommon to see multi-purpose goal posts that include football goal posts at the top and a soccer net at the bottom ; these are usually seen at smaller schools and in multi-purpose stadiums where facilities are used for multiple sports.

They place, level, and move the dolly track, then push and pull the dolly, and usually a Camera Operator and Camera Assistant as riders.

They usually offer integration with lower level DLLs generated from a typical 3GL for when the need arise for more hardware / OS specific operations.

This occurs because excited molecules usually decay to the lowest vibrational level of the excited state before fluorescence emission takes place.

Food production in 1946 – 48 was only two-thirds of the prewar level, while grain and meat shipments – which usually supplied 25 % of the food – no longer arrived from the East.

The number of hormone molecules available for complex formation is usually the key factor in determining the level at which signal transduction pathways are activated, the number of hormone molecules available being determined by the concentration of circulating hormone, which is in turn influenced by the level and rate at which they are secreted by biosynthetic cells.