Geography of Iraq
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The geography of Iraq is diverse and falls into five main regions: the desert (west of the Euphrates), Upper Mesopotamia (between the upper Tigris and Euphrates rivers), the northern highlands of Iraq, Lower Mesopotamia, and the alluvial plain extending from around Tikrit to the Persian Gulf.
The mountains in the northeast are an extension of the alpine system that runs eastward from the Balkans through southern Turkey, northern Iraq, Iran, and Afghanistan, eventually reaching the Himalayas in Pakistan. The desert lies in the southwest provinces along the borders with Saudi Arabia and Jordan and geographically belongs in the Arabian Peninsula.
Major geographical features
Most geographers, including those of the Iraqi government, discuss the country's geography in terms of four main zones or regions: the desert in the west and southwest; the rolling upland between the upper Tigris and Euphrates rivers (in Arabic the Dijla and Furat, respectively); the highlands in the north and northeast; and the alluvial plain through which the Tigris and Euphrates flow. Iraq's official statistical reports give the total land area as 438,446 km2 (169,285 sq mi), whereas a United States Department of State publication gives the area as 434,934 km2 (167,929 sq mi).
Upper Mesopotamia
The uplands region, between the Tigris north of
Lower Mesopotamia
An
Because the waters of the Tigris and Euphrates above their confluence are heavily silt- laden, irrigation and fairly frequent flooding deposit large quantities of silty loam in much of the delta area. Windborne silt contributes to the total deposit of sediments. It has been estimated that the delta plains are built up at the rate of nearly twenty centimeters in a century. In some areas, major floods lead to the deposit in temporary lakes of as much as thirty centimeters of mud.
The Tigris and Euphrates also carry large quantities of
Baghdad area
Between Upper and Lower Mesopotamia is the urban area surrounding
in the west.Highlands
The northeastern highlands begin just south of a line drawn from
Desert
The desert zone, an area lying west and southwest of the Euphrates River, is a part of the Syrian Desert and Arabian Desert, which covers sections of Syria, Jordan, and Saudi Arabia and most of the Arabian Peninsula. The region, sparsely inhabited by pastoral Bedouins, consists of a wide stony plain interspersed with rare sandy stretches. A widely ramified pattern of wadis–watercourses that are dry most of the year–runs from the border to the Euphrates. Some wadis are over 400 km (250 mi) long and carry brief but torrential floods during the winter rains.
Western and southern Iraq is a vast desert region covering some 64,900 square miles (168,000 square kilometres), almost two-fifths of the country. The western desert, an extension of the Syrian Desert, rises to elevations above 1,600 feet (490 metres). The southern desert is known as Al-Hajarah in the western part and as Al-Dibdibah in the east. Both deserts are part of the Arabian Desert. Al Hajarah has a complex topography of rocky desert, wadis, ridges, and depressions. Al-Dibdibah is a more sandy region with a covering of scrub vegetation. Elevation in the southern desert averages between 1,000 and 2,700 feet (300 and 820 metres). A height of 3,119 feet (951 metres) is reached at Mount 'Unayzah at the intersection of the borders of Jordan, Iraq and Saudi Arabia. The deep Wadi Al-Batin runs 45 miles (72 km) in a northeast–southwest direction through Al-Dibdibah. It has been recognized since 1913 as the boundary between western Kuwait and Iraq.
Tigris–Euphrates river system
The Euphrates originates in Turkey, is augmented by the
Both the Tigris and the Euphrates break into a number of channels in the marshland area, and the flow of the rivers is substantially reduced by the time they come together at Al Qurnah. Moreover. the swamps act as silt traps, and the Shatt al Arab is relatively silt free as it flows south. Below
The waters of the Tigris and Euphrates are essential to the life of the country, but they sometimes threaten it. The rivers are at their lowest level in September and October and at flood in March, April, and May when they may carry forty times as much water as at low mark. Moreover, one season's flood may be ten or more times as great as that in another year. In 1954, for example, Baghdad was seriously threatened, and
Until the mid-twentieth century, most efforts to control the waters were primarily concerned with irrigation. Some attention was given to problems of flood control and drainage before the revolution of July 14, 1958, but development plans in the 1960s and 1970s were increasingly devoted to these matters, as well as to irrigation projects on the upper reaches of the Tigris and Euphrates and the tributaries of the Tigris in the northeast. During the war, government officials stressed to foreign visitors that, with the conclusion of a peace settlement, problems of irrigation and flooding would receive top priority from the government.
Iraqi
Settlement patterns
In the rural areas of the alluvial plain and in the lower Diyala region, settlement almost invariably clusters near the rivers, streams, and irrigation canals. The bases of the relationship between watercourse and settlement have been summarized by Robert McCormick Adams, director of the Oriental Institute of the University of Chicago. He notes that the levees laid down by streams and canals provide advantages for both settlement and agriculture. Surface water drains more easily on the levees' back-slope, and the coarse soils of the levees are easier to cultivate and permit better subsurface drainage. The height of the levees gives some protection against floods and the frost that often affect low-lying areas and may kill and/or damage winter crops. Above all, those living or cultivating on the crest of a levee have easy access to water for irrigation and household use in a dry, hot country.
Although there are some isolated homesteads, most rural communities are nucleated settlements rather than dispersed farmsteads; that is, the farmer leaves his village to cultivate the fields outside it. The pattern holds for farming communities in the
Fragmentary information suggests that most farmers in the alluvial plain tend to live in villages of over 100 persons. For example, in the mid-1970s a substantial number of the residents of Baqubah, the administrative center and major city of Diyala Governorate, were employed in agriculture.
The Marsh Arabs of the south usually live in small clusters of two or three houses kept above water by
The war has had its effect on the lives of these denizens of the marshes. With much of the fighting concentrated in their areas, they have either migrated to settled communities away from the marshes or have been forced by government decree to relocate within the marshes. Also, in early 1988, the marshes had become the refuge of deserters from the Iraqi army who attempted to maintain life in the fastness of the overgrown, desolate areas while hiding out from the authorities. These deserters in many instances have formed into large gangs that raid the marsh communities; this also has induced many of the marsh dwellers to abandon their villages.
The war has also affected settlement patterns in the northern
In the arid areas of Iraq to the west and south, cities and large towns are almost invariably situated on watercourses, usually on the major rivers or their larger tributaries. In the south this dependence has had its disadvantages. Until the recent development of flood control,
Climate
The climate of Iraq is mainly a
Roughly 90% of the annual rainfall occurs between November and April, most of it in the winter months from December through March. The remaining six months, particularly the hottest ones of June, July, and August, are extremely dry.
Except in the north and northeast, mean annual rainfall ranges between 100 and 190 millimeters (3.9 and 7.5 in). Data available from stations in the foothills and steppes south and southwest of the mountains suggest mean annual rainfall between 320 and 570 millimeters (12.6 and 22.4 in) for that area. Rainfall in the mountains is more abundant and may reach 1,000 millimeters (39.4 in) a year in some places, but the terrain precludes extensive cultivation. Cultivation on nonirrigated land is limited essentially to the mountain valleys, foothills, and
Mean minimum temperatures in the winter range from near freezing (just before dawn) in the northern and northeastern foothills and the western desert to 2 and 4 to 5 °C (35.6 and 39.2 to 41.0 °F) in the alluvial plains of southern Iraq. They rise to a mean maximum of about 16 °C (60.8 °F) in the western desert and the northeast, and 17 °C (62.6 °F) in the south. In the summer mean minimum temperatures range from about 27 to 31 °C (80.6 to 87.8 °F) and rise to maxima between roughly 41 and 45 °C (105.8 and 113.0 °F). Temperatures sometimes fall below freezing and have fallen as low as −14 °C (6.8 °F) at Ar Rutbah in the western desert. Such summer heat, even in a hot desert, is high and this can be easily explained by the very low elevations of deserts regions which experience these exceptionally searing high temperatures. In fact, the elevations of cities such as Baghdad or Basra are near the sea level (0 m) because deserts are located predominantly along the Persian Gulf. That is why some Gulf's countries like Iraq, Iran and Kuwait experience extreme heat during summer, even more extreme than the normal level. The searing summer heat only exists in low elevations in these countries while mountains and higher elevations know much more moderated summer temperatures.
The summer months are marked by two kinds of wind phenomena. The southern and southeasterly sharqi, a dry, dusty wind with occasional gusts of 80 kilometers per hour (50 mph), occurs from April to early June and again from late September through November. It may last for a day at the beginning and end of the season but for several days at other times. This wind is often accompanied by violent duststorms that may rise to heights of several thousand meters and close airports for brief periods. From mid-June to mid-September the prevailing wind, called the shamal, is from the north and northwest. It is a steady wind, absent only occasionally during this period. The very dry air brought by this shamal permits intensive sun heating of the land surface, but the breeze has some cooling effect.
The combination of rain shortage and extreme heat makes much of Iraq a desert. Because of very high rates of evaporation, soil and plants rapidly lose the little moisture obtained from the rain, and vegetation could not survive without extensive irrigation. Some areas, however, although arid, do have natural vegetation in contrast to the desert. For example, in the
Climate data for Baghdad | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Mean daily maximum °C (°F) | 15.5 (59.9) |
18.5 (65.3) |
23.6 (74.5) |
29.9 (85.8) |
36.5 (97.7) |
41.3 (106.3) |
44.0 (111.2) |
43.5 (110.3) |
40.2 (104.4) |
33.4 (92.1) |
23.7 (74.7) |
17.2 (63.0) |
30.6 (87.1) |
Daily mean °C (°F) | 9.7 (49.5) |
12 (54) |
16.6 (61.9) |
22.6 (72.7) |
28.3 (82.9) |
32.3 (90.1) |
34.8 (94.6) |
34 (93) |
30.5 (86.9) |
24.7 (76.5) |
16.5 (61.7) |
11.2 (52.2) |
22.8 (73.0) |
Mean daily minimum °C (°F) | 3.8 (38.8) |
5.5 (41.9) |
9.6 (49.3) |
15.2 (59.4) |
20.1 (68.2) |
23.3 (73.9) |
25.5 (77.9) |
24.5 (76.1) |
20.7 (69.3) |
15.9 (60.6) |
9.2 (48.6) |
5.1 (41.2) |
14.9 (58.8) |
Average rainfall mm (inches) | 26 (1.0) |
28 (1.1) |
28 (1.1) |
17 (0.7) |
7 (0.3) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
3 (0.1) |
21 (0.8) |
26 (1.0) |
156 (6.1) |
Average rainy days | 5 | 5 | 6 | 4 | 2 | 0 | 0 | 0 | 0 | 1 | 5 | 6 | 34 |
Average relative humidity (%)
|
71 | 61 | 53 | 43 | 30 | 21 | 22 | 22 | 26 | 34 | 54 | 71 | 42 |
Mean monthly sunshine hours | 192.2 | 203.4 | 244.9 | 255.0 | 300.7 | 348.0 | 347.2 | 353.4 | 315.0 | 272.8 | 213.0 | 195.3 | 3,240.9 |
Average ultraviolet index | 3 | 4 | 6 | 8 | 10 | 11 | 11 | 10 | 9 | 6 | 4 | 3 | 7 |
Source 1: World Meteorological Organization (UN)[4] | |||||||||||||
Source 2: Climate & Temperature[5][6] |
Climate data for Basra | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Record high °C (°F) | 34 (93) |
39 (102) |
39 (102) |
42 (108) |
48 (118) |
51 (124) |
53.9 (129.0) |
52.2 (126.0) |
49.6 (121.3) |
46 (115) |
37 (99) |
30 (86) |
53.9 (129.0) |
Mean daily maximum °C (°F) | 18.4 (65.1) |
21.7 (71.1) |
27.7 (81.9) |
33.9 (93.0) |
40.7 (105.3) |
45.3 (113.5) |
46.9 (116.4) |
47.1 (116.8) |
43.2 (109.8) |
36.8 (98.2) |
25.9 (78.6) |
19.8 (67.6) |
33.9 (93.1) |
Daily mean °C (°F) | 12.9 (55.2) |
15.7 (60.3) |
21.0 (69.8) |
27.2 (81.0) |
33.9 (93.0) |
38.3 (100.9) |
40.0 (104.0) |
39.8 (103.6) |
35.7 (96.3) |
29.6 (85.3) |
20.1 (68.2) |
14.4 (57.9) |
27.4 (81.3) |
Mean daily minimum °C (°F) | 7.6 (45.7) |
9.5 (49.1) |
13.9 (57.0) |
19.7 (67.5) |
25.9 (78.6) |
30.4 (86.7) |
32.3 (90.1) |
31.9 (89.4) |
27.8 (82.0) |
22.4 (72.3) |
14.5 (58.1) |
9.2 (48.6) |
20.4 (68.8) |
Record low °C (°F) | −4.7 (23.5) |
−4 (25) |
1.9 (35.4) |
2.8 (37.0) |
8.2 (46.8) |
18.2 (64.8) |
22.2 (72.0) |
20 (68) |
13.1 (55.6) |
6.1 (43.0) |
1 (34) |
−2.6 (27.3) |
−4.7 (23.5) |
Average precipitation mm (inches) | 34 (1.3) |
19 (0.7) |
23 (0.9) |
11 (0.4) |
4 (0.2) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
7 (0.3) |
30 (1.2) |
31 (1.2) |
159 (6.2) |
Average rainy days | 4 | 2 | 2 | 2 | 1 | 0 | 0 | 0 | 0 | 1 | 2 | 3 | 17 |
Mean monthly sunshine hours | 186 | 198 | 217 | 248 | 279 | 330 | 341 | 310 | 300 | 279 | 210 | 186 | 3,084 |
Mean daily sunshine hours | 6 | 7 | 7 | 8 | 9 | 11 | 11 | 10 | 10 | 9 | 7 | 6 | 8 |
Source 1: Climate-Data.org[7] | |||||||||||||
Source 2: Weather2Travel for rainy days and sunshine[8] |
Climate data for Mosul | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Record high °C (°F) | 21.1 (70.0) |
26.9 (80.4) |
31.8 (89.2) |
35.5 (95.9) |
42.9 (109.2) |
44.1 (111.4) |
47.8 (118.0) |
49.3 (120.7) |
46.1 (115.0) |
42.2 (108.0) |
32.5 (90.5) |
25.0 (77.0) |
49.3 (120.7) |
Mean daily maximum °C (°F) | 12.4 (54.3) |
14.8 (58.6) |
19.3 (66.7) |
25.2 (77.4) |
32.7 (90.9) |
39.2 (102.6) |
42.9 (109.2) |
42.6 (108.7) |
38.2 (100.8) |
30.6 (87.1) |
21.1 (70.0) |
14.1 (57.4) |
27.8 (82.0) |
Daily mean °C (°F) | 7.3 (45.1) |
9.1 (48.4) |
13.1 (55.6) |
18.2 (64.8) |
24.5 (76.1) |
30.3 (86.5) |
34.0 (93.2) |
33.4 (92.1) |
28.7 (83.7) |
22.1 (71.8) |
14.2 (57.6) |
9.0 (48.2) |
20.3 (68.6) |
Mean daily minimum °C (°F) | 2.2 (36.0) |
3.4 (38.1) |
6.8 (44.2) |
11.2 (52.2) |
16.2 (61.2) |
21.3 (70.3) |
25.0 (77.0) |
24.2 (75.6) |
19.1 (66.4) |
13.5 (56.3) |
7.2 (45.0) |
3.8 (38.8) |
12.8 (55.1) |
Record low °C (°F) | −17.6 (0.3) |
−12.3 (9.9) |
−5.8 (21.6) |
−4.0 (24.8) |
2.5 (36.5) |
9.7 (49.5) |
11.6 (52.9) |
14.5 (58.1) |
8.9 (48.0) |
−2.6 (27.3) |
−6.1 (21.0) |
−15.4 (4.3) |
−17.6 (0.3) |
Average precipitation mm (inches) | 62.1 (2.44) |
62.7 (2.47) |
63.2 (2.49) |
44.1 (1.74) |
15.2 (0.60) |
1.1 (0.04) |
0.2 (0.01) |
0.0 (0.0) |
0.3 (0.01) |
11.8 (0.46) |
45.0 (1.77) |
57.9 (2.28) |
363.6 (14.31) |
Average precipitation days | 11 | 11 | 12 | 9 | 6 | 0 | 0 | 0 | 0 | 5 | 7 | 10 | 71 |
Mean monthly sunshine hours | 158 | 165 | 192 | 210 | 310 | 363 | 384 | 369 | 321 | 267 | 189 | 155 | 3,083 |
Source 1: World Meteorological Organisation (UN)[9]
| |||||||||||||
Source 2: Weatherbase (extremes only)[10] |
Area and boundaries
In 1922 British officials concluded the Treaty of Mohammara with Abd al Aziz ibn Abd ar Rahman
Through Algerian mediation, Iran and Iraq agreed in March 1975 to normalize their relations, and three months later they signed a treaty known as the Algiers Accord. The document defined the common border all along the Khawr Abd Allah (Shatt) River estuary as the thalweg. To compensate Iraq for the loss of what formerly had been regarded as its territory, pockets of territory along the mountain border in the central sector of its common boundary with Iran were assigned to it. Nonetheless, in September 1980 Iraq went to war with Iran, citing among other complaints the fact that Iran had not turned over to it the land specified in the Algiers Accord. This problem has subsequently proved to be a stumbling block to a negotiated settlement of the ongoing conflict.
In 1988 the boundary with Kuwait was another outstanding problem. It was fixed in a 1913 treaty between the Ottoman Empire and British officials acting on behalf of Kuwait's ruling family, which in 1899 had ceded control over foreign affairs to Britain. The boundary was accepted by Iraq when it became independent in 1932, but in the 1960s and again in the mid-1970s, the Iraqi government advanced a claim to parts of Kuwait. Kuwait made several representations to the Iraqis during the war to fix the border once and for all but Baghdad repeatedly demurred, claiming that the issue is a potentially divisive one that could inflame nationalist sentiment inside Iraq. Hence in 1988 it was likely that a solution would have to wait until the war ended.
Area:
total: 438,317 km2 (169,235 sq mi)
land: 437,367 km2 (168,868 sq mi)
water: 950 km2 (370 sq mi)
Land boundaries:
total: 3,809 km (2,367 mi)
border countries: Iran 1,599 km (994 mi), Saudi Arabia 811 km (504 mi), Syria 599 km (372 mi), Turkey 367 km (228 mi), Kuwait 254 km (158 mi), Jordan 179 km (111 mi)
Coastline: 58 km (36 mi)
Maritime claims:
territorial sea: 12 nmi (22.2 km; 13.8 mi)
continental shelf: not specified
Terrain:
mostly broad plains; reedy marshes along Iranian border in south with large flooded areas; mountains along borders with Iran and Turkey
Elevation extremes:
lowest point: Persian Gulf 0 m
highest point:
Resources and land use
Natural resources: petroleum, natural gas, phosphates, sulfur
Land use:
arable land: 7.89%
permanent crops: 0.53%
other: 91.58% (2012)
Irrigated land: 35,250 km2 or 13,610 sq mi (2003)
Total renewable water resources: 89.86 km3 or 21.56 cu mi (2011)
Freshwater withdrawal (domestic/industrial/agricultural):
total: 66 km3/yr (7%/15%/79%)
per capita: 2,616 m3/yr (2000)
While its proven
Environmental concerns
Natural hazards: dust storms, sandstorms, floods
Environment - current issues: government water control projects have drained most of the inhabited marsh areas east of An Kshatriya by drying up or diverting the feeder streams and rivers; a once sizable population of Shi'a Muslims, who have inhabited these areas for thousands of years, has been displaced; furthermore, the destruction of the natural habitat poses serious threats to the area's wildlife populations; inadequate supplies of potable water; development of Tigris-Euphrates Rivers system contingent upon agreements with upstream riparian Turkey; air and water pollution; soil degradation (desalination) and erosion; and desertification.
Environment - international agreements:
party to:
signed, but not ratified:
- Major regressions:
- Minor ecoregions:
- Zagros Mountains forest steppe (PA0446)
- Middle East steppe (PA0812)
- Eastern Mediterranean conifer-sclerophyllous broadleaf forests (PA1207)
- South Iran Nubo-Sindian desert and semi-desert (PA1328)
- Tigris-Euphrates alluvial salt marsh (PA0906)
- Red Sea Nubo-Sindian tropical desert and semi-desert (PA1325)
- Persian Gulf desert and semi-desert (PA1323)
See also
References
- ^ PMID 24603901.
- ^ "Weather longterm historical data Baghdad, Iraq". The Washington Post. 1999. Archived from the original on 29 November 2014.
- ^ Brugge, Roger. "World weather news, August 2011". Department of Meteorology, University of Reading. Archived from the original on 21 August 2016.
- ^ "World Weather Information Service – Baghdad". World Meteorological Organization. Archived from the original on 25 June 2013. Retrieved 20 June 2013.
- ^ "Baghdad Climate Guide to the Average Weather & Temperatures, with Graphs Elucidating Sunshine and Rainfall Data & Information about Wind Speeds & Humidity". Climate & Temperature. Archived from the original on 6 January 2012. Retrieved 25 December 2011.
- ^ "Monthly weather forecast and climate for Baghdad, Iraq". Archived from the original on 19 September 2020. Retrieved 27 April 2020.
- ^ "Climate: Basra – Climate graph, Temperature graph, Climate table". Climate-Data.org. Retrieved 22 August 2013.
- ^ "Basra Climate and Weather Averages, Iraq". Weather2Travel. Retrieved 22 August 2013.
- ^ "World Weather Information Service – Mosul". United Nations. Retrieved 1 January 2011.
- ^ "Mosul, Iraq Travel Weather Averages". Weatherbase. Retrieved 2012-12-19.
- ^ US Department of Energy Information - Assessment of Iraqi Petroleum Assets Archived November 9, 2010, at the Wayback Machine
- This article incorporates text from this source, which is in the public domain. Iraq: A Country Study. Federal Research Division.
- This article incorporates public domain material from The World Factbook. CIA.