Since there was little rainfall irrigation systems were necessary.

Since the southwestern half of the island lies in the rain shadow of the mountains, it has a semiarid climate and receives fewer than of rainfall annually.

Since the area has high annual rainfall and mild coastal climate there is a lush rainforest covering the foothills-this forest is nationally significant for the total absence of beech trees ( genus Nothofagus ).

Since it was last full in 1998 the Warragamba Dam catchment area experienced extremely low rainfall, and on 8 February 2007 the lake recorded an all time low of 32. 5 % of capacity, although this had returned to 60 % by late 2008.

Since rainfall is seasonal in Panama, the lake acts as a water store, allowing the canal to continue operation through the dry season.

Since 1954, better planning, understanding of rainfall patterns and sturdier building has severely marginalised the impact of the Lammas Floods, however both 2007 and 2008 saw their return to Newmilns, when heavy rainfall caused burns north of the town to burst their banks and flow through the streets, again causing damage to homes and businesses across the town.

Since all of Wales ' ranges face the predominant westerly air stream coming in from the Atlantic Ocean, they enjoy high levels of rainfall and are the source of numerous rivers, among which the rivers Severn and Wye, which rise on the eastern slopes of Pumlumon, are the largest.

Since Singapore lacks natural freshwater rivers and lakes, the primary source of domestic water is rainfall.

Since rain forests have equitable rainfall throughout the year, they do not technically have a wet season.

Since hurricanes are the main source of extreme rainfall in the tropical oceans, past hurricane events can be dated to the days of their impact on the coral by looking at the increased < sup > 18 </ sup > O concentration within the coral.

Since the 1940s, cloud seeding has been used to change the structure of clouds by dispersing substances into the air, potentially increasing or altering rainfall.

Since a Skeletal Age rating can be made at any age during growth, from Elbow, Shoulder, Knee, or Foot as well as Hand, it seems to be the method of choice when one wishes to study most aspects of skeletal developmental progress during childhood.

Since strong nociceptive stimuli produce an experimental neurosis during which the animals fail to eat in the experimental situation, Wolpe thought that he could utilize the feeding-pain antagonism to inhibit the neurotic symptoms through feeding.

Since then and during the first decade, the results were given to newspapers for publication at 11 pm on the night of the awards.

Since baseball-only stadiums were not seen as fiscally viable during that era, this effectively ended Stone's bid.

Since the right supra-renal vein is short and drains directly into the inferior vena cava it is likely to injure the latter during removal of right adrenal for various reasons.

Since the 2002 edition, the Apostles ' Creed is included in the Roman Missal with the indication, " Instead of the Niceno-Constantinopolitan Creed, especially during Lent and Easter time, the baptismal Symbol of the Roman Church, known as the Apostles ’ Creed, may be used.

Since its inception Beechcraft has resided in Wichita, Kansas, also the home of chief competitor Cessna, the birthplace of Learjet and of Stearman, whose trainers were used in large numbers during WW2.

Since Daniel was a statesman during the Persian conquests, the Book of Daniel could have been written in a period when the Persians had their greatest influence on Aramaic, believed to be in the mid 6th century BC.

* Since Big Brother 2, the UK series always opens with a twist which have included the public being able to choose the final housemate out of three possibilities ( Big Brother 2 ), the public voting for a housemate to leave during the first week and then the housemates choosing between the two housemates with the least number of votes ( Big Brother 3 ), First Night Nominations ( Big Brother 4 ), Suitcase Nominations ( Big Brother 5 ), Unlucky Housemate 13 ( Big Brother 6 ), Big Brother Hood ( Big Brother 7 ), an all-female House and the first inclusion of twins as contestants ( Big Brother 8 ), the first couple to enter as housemates and set a secret task to hide their real relationship ( Big Brother 9 ), all " housemates " really being " non-housemates " who had to earn their housemate status ( Big Brother 10 ), a mole entering the House with an " Impossible Task " ( Big Brother 11 ), Jackie Stallone entering a house containing her son's ex-wife ( Celebrity Big Brother 3 ), the entrance of a non-celebrity in a celebrity edition ( Celebrity Big Brother 4 ) and Jade Goody's family announced to be visiting.

Since that time, the term Bolshevik has been regarded as obsolete, and relevant only to the pre-Revolutionary times, during the Russian Revolution itself and the Russian Civil War which followed.

Since a number of different architectural styles succeeded one another during the Angkorean period, not all of these features were equally in evidence throughout the period.

Since the death of Medellín cartel leader Pablo Escobar in a police shootout during December 1993, indiscriminate acts of violence associated with that organization have abated as the " cartels " have broken up into multiple, smaller and often-competing trafficking organizations.

Since the shorts were produced during the rise of film noir in cinema, the change was usually represented as a stylized sequence: Clark Kent's silhouette is clearly seen behind a closed door's pebble glass window ( or a shadow thrown across a wall ) as he strips to his Superman costume.

Since 2006, the College has guaranteed housing for students during their freshman and sophomore years.

Since ferry services were inoperable during the winter months, " rum-runners " traveled across the frozen Detroit River by car to Canada and back with trunk loads of alcohol.

Since then world congresses have been held in different countries every year, except during the two World Wars.

Since 1993, the Eritrean People ’ s Liberation Front army has been involved in tree planting ; the annual average rate of deforestation during 1990 – 2000 was 0. 3 percent.

Since the cuticula of these animals often forms an inelastic exoskeleton, it is shed during growth and a new, larger covering is formed.

Since bosons carry one unit of angular momentum, the fermion's spin direction will flip from + to − ( or vice versa ) during such an exchange ( in units of the reduced Planck's constant ).

Since unsaturated fats contain fewer carbon-hydrogen bonds than saturated fats with the same number of carbon atoms, unsaturated fats will yield slightly less energy during metabolism than saturated fats with the same number of carbon atoms.

Since 1809, the Grand Duchy had benefited from a customs organization, an independent domestic state budget, its own currency ( Finnish markka, since 1860 ) and the industrial progress during 1860 – 1916.

Since seeing the original Japanese-language versions of Godzilla movies was very hard to come by from a Western standpoint during this time period, it became easily believable.

Since passing current through a gel causes heating, gels may melt during electrophoresis.

Since the action of the bolus insulin in the blood stream will extend for several hours, the basal insulin could be stopped or reduced during this time.

Since the surfaces of a wet clutch can be slippery ( as with a motorcycle clutch bathed in engine oil ), stacking multiple clutch discs can compensate for the lower coefficient of friction and so eliminate slippage under power when fully engaged.

Since a green / blue tint signifies copious amounts of water, a strong updraft to support it, high winds from the storm raining out, and wet hail ; all elements that improve the chance for it to become severe, can all be inferred from this.

Since the recent construction of a golf course located on Kentucky Route 11, this portion of Kentucky law may be relevant: According to Kentucky Revised Statutes ( KRS ) 242. 123, an individual precinct within any dry territory — which can be a dry county, or a dry portion of an otherwise wet county — that contains a USGA-regulation golf course may vote to allow the sale of alcoholic beverages.

Since cuts are more likely when using safety razors and straight razors, wet shaving is generally done in more than one pass with the blade.

Since the solvent recovery is less than 100 %, and because dry cleaning does not remove water-based stains well, entrepreneurs have developed the wet cleaning process, which is, in essence, cold-water washing and air drying, using a computer-controlled washer and dryer.

Since foam neoprene contains gas pockets, the material compresses under water pressure, getting thinner at greater depths ; a 7 mm neoprene wet suit offers much less exposure protection under 100 feet of water than at the surface.

Since he wants Varinia as a concubine, he purchases a wet nurse for her baby.

Since the dry suit can contain air, some divers control their buoyancy with the dry suit and dive without the usual BCD / buoyancy control vest that is commonly worn by wet suit divers.

Since it allowed alcohol sales before annexation, it remained " wet " although the vast majority of Richardson was at the time " dry ".

Since 1995, the US wet feet, dry feet policy has generally allowed Cubans who reach dry land in the U. S. to stay while those intercepted at sea by the U. S. Coast Guard are returned to Cuba.

Since 2006 the scales on some knife models can have texturized non-slip inlays incorporated, intended for sufficient grip with moist or wet hands.

Since the ease of writing with a brush is even greater than that of writing with a stylus in wet clay, it is assumed that the style and structure of Shang graphs on bamboo were similar to those on bronzes, and also that the majority of writing occurred with a brush on such books.

Since the kiln method shunts the smoke away from the wet malt, a smoky flavour is not imparted to the grain, nor to the subsequent beer.

Since completely slick tyres are outlawed on most roads due to their inability to handle wet pavement, the " cheater slick " became a popular item in the hot rod world in the 1960s ; a typical slick type tyre, but engraved with the absolute minimal amount of tread grooves required to satisfy legal requirements.

Since the 1980s the Trust has campaigned to save wetlands in the Gordano Valley in North Somerset where Clapton Moor ( 40 hectares of grassland ) near Clapton in Gordano, Weston Big Wood, ( 38 hectares of ancient woodland ), and Weston Moor ( 59 hectares of wet grassland ) near Weston in Gordano and Walton Common north east of Walton in Gordano are now rich in birdlife.

Since 1991 the CPSC has mandated by US law that all dryers must use a ground fault circuit interrupter so that it cannot electrocute a person if it gets wet.

Since colors will usually mix if one is laid over top of another while both are wet, full paintings ( requiring at most only a few minutes of detail work after the main work is dry ) can be produced in a short period of time – Alexander and Ross could produce an entire landscape in under half an hour on their respective television shows, The Magic of Oil Painting and The Joy of Painting.

Since it was the wet season, and she did not have a consistent plan for travel, the locals were concerned for her safety.

Since there is no minimum threshold for a safe level of outdoor asbestos particle concentration, it should be handled by making it wet in order to prevent the escape of particles.

Clarkson told People that one of her favourite moments on television was performing " Since U Been Gone " at the MTV Video Music Awards, saying " I hate being all dressed up, so the fact that I was soaking wet with mascara smeared all over my face was definitely the highlight of my evening!

Since then, in what has become known as the " wet foot, dry foot " policy, a Cuban caught on the waters between the two nations ( i. e., with " wet feet ") would summarily be sent home or to a third country.

Since liquid advances over previously dry surface but recedes from previously wet surface, contact angle hysteresis can also arise if the solid has been altered due to its previous contact with the liquid ( e. g., by a chemical reaction, or absorption ).