Zarqa in the context of "Zarqa River"

Irbid (Arabic: إِربِد), known in ancient times as Arabella or Arbela (Άρβηλα in Ancient Greek), is the capital and largest city of Irbid Governorate. It has the second-largest metropolitan population in Jordan after Amman, with a population of around 2,003,800. As a city, Irbid is Jordan's third-largest, after Amman and Zarqa.

Irbid is located about 70 kilometres (43 mi) north of Amman on the northern ridge of the Gilead, equidistant from Pella, Beit Ras (Capitolias), and Um Qais, and approximately 20 kilometres (12 mi) south of the Syrian border.

The Zarqa River (Arabic: نهر الزرقاء, Nahr az-Zarqāʾ, lit. "the River of the Blue [City]") is the second largest tributary of the lower Jordan River, after the Yarmouk River. It is the third largest river in the region by annual discharge and its watershed encompasses the most densely populated areas east of the Jordan River. The Zarqa rises in springs near Amman, and flows through a deep and broad valley into the Jordan, at an elevation 1,090 metres (3,580 ft) lower.

At its spring lays 'Ain Ghazal (Arabic: عين غزال), a major archaeological site that dates back to the Neolithic. Archaeological finds along the course of the river indicate the area was rich in flora and fauna in the past.

Black September (Arabic: أيلول الأسود, romanized: Aylūl al-ʾAswad), also known as the Jordanian Civil War, was an armed conflict between Jordan, led by King Hussein, and the Palestine Liberation Organization (PLO), led by chairman Yasser Arafat. The main phase of the fighting took place between 16 and 27 September 1970, though certain aspects of the conflict continued until 17 July 1971.

After the 1967 Six-Day War, Palestinian fedayeen guerrillas relocated to Jordan and stepped up their attacks against Israel and what had become the Israeli-occupied West Bank. They were headquartered at the Jordanian border town of Karameh, which Israel targeted during the Battle of Karameh in 1968, leading to a surge of Arab support for the fedayeen. The PLO's strength grew, and by early 1970, leftist groups within the PLO began calling for the overthrow of Jordan's Hashemite monarchy, leading to violent clashes in June 1970. Hussein hesitated to oust them from the country, but continued PLO activities in Jordan culminated in the Dawson's Field hijackings of 6 September 1970. This involved the Popular Front for the Liberation of Palestine (PFLP) seizing three civilian passenger flights and forcing their landing in the Jordanian city of Zarqa, where they took foreign nationals as hostages and blew up the planes in front of international press. Hussein saw this as the last straw and ordered the Jordanian Army to take action.

Zarqa Governorate (Arabic: محافظة الزرقاء, romanized: Muħāfazat az-Zarqāʔ, local dialects ez-Zergā or ez-Zer'a) is the third largest governorate in Jordan by population. The capital of Zarqa governorate is Zarqa City, which is the largest city in the governorate. It is located 25 kilometres (16 mi) east of the Jordanian capital Amman. The second largest city in the governorate is Russeifa.

Zarqa Governorate hosts the largest military and air bases of the Jordanian armed forces.

Highway 15 in Jordan is also known as the Desert Highway runs in Jordan south to north. It starts in Aqaba going north east towards Ma'an, passing through the desert to the east of the major settlements in the southern region of Jordan. It then merges into the regional Highway 35 going to Amman. In Amman, it then follows the path of a newly constructed bypass highway to Zarqa.

The highway is an area of significant road safety concern.