Tuesday, November 26, 2013

Revision Questions

1. Define the term river?




2.Identify the name of the river/s in the following parishes.

a. Portland 

b. St. Mary

c. Westmoreland

d. St. James

e. Clarendon

Video showing the Features Black River

Map of major Rivers in Jamaica

 Map showing the location of the major rivers in Jamaica

Principal rivers in Jamaica


The rivers of Portland, which have their source in the Blue Mountains, flow very swiftly, and can be very destructive in time of heavy rainfall. The Rio Grande, rising on the northern slopes of the Blue Mountains, is a large river which has its course through some of the wildest and most beautiful scenery in the island. Rafting on this river has become, in recent years, a popular sporting pastime. Other main rivers of Portland are the Swift, Spanish, and Buff Bay. 

The Wag Water (formerly Agua Alta) rises in the mountains of St. Andrew and flows through the parish of St. Mary, entering the sea west of Annotto Bay. The Hope River rises in the hills near Newcastle and enters the sea about 10 kilometres (6 miles) east of Kingston. Both the Wag Water and the Hope river supply Kingston with water.

The Milk River, which is navigable for some 3 kilometres (2 miles), supplies a system of canals for the irrigation of the plains of Vere in Clarendon. Rising at Windsor in the interior of Trelawny, the Martha Brae discharges to the east of Falmouth. The chief river of Westmoreland, the Cabaritta, waters the alluvial district of the area. 

With its tributaries rising in the Above Rocks district in St. Andrew, the Rio Cobre runs through St. Catherine, and is used for providing irrigation and drinking water. The Plantain Garden River in St. Thomas is the only important river which does not follow the general rule of flowing north or south. Flowing south in its upper course, it turns east upon meeting the coastal range of hills. It then flows through the fertile Plantain Garden River Valley and enters the sea at Holland Bay. 

Special mention must be made of the underground rivers in the limestone region. The Cave and Hectors Rivers are notable examples. The porous nature of the limestone accounts for the scarcity of water in the central districts. The parish of St. Ann, because it is chiefly of limestone formation, has no rivers in its interior. When swollen by exceptional rainfall the underground reservoirs sometimes rise to the surface as lakes. The Moneague Lake near Moneague last rose in 1970 and disappeared in 1971. 


PRINCIPAL RIVERS 

St. Thomas -          The Plantain Garden River. Yallahs and Morant Rivers

Portland -               The Rio Grande, Swift. Buff Bay and Spanish Rivers

St. Andrew -           The Hope and Cane Rivers

St. Catherine -       The Rio Cobre and Ferry Rivers

St. Mary -              The Wag Water, Dry River. Rio Nuevo and
                                the White River (The White River forms
                                the boundary between St. Mary and St. Ann )

St. Ann -                 Roaring River, Llandovery River and
                                the Rio Bueno between Trelawny and St. Ann.

Between St.Ann
and Clarendon -  The Cave River. 

Clarendon -         The Milk River and Rio Minho.


St. Elizabeth -     The Black River.

Trelawny -          The Martha Brae River.

StJames -          The Great River which divides St. James from
                               Hanover and Westmoreland

Westmoreland -  The Cabaritta River. 

Rivers in Jamaica


Images showing the Black River in St Elizabeth

Rivers are apart of Jamaica's Physical features. According to BBC s a river " is fresh water flowing across the surface of the land, usually to the sea. It flows in a channel. The bottom of the channel is called the bed and the sides of the channel are called the banks.

Most of the rivers in Jamaica are not navigable. The height of the mountains causes them to run swiftly in deep beds, and their courses are sometimes broken by waterfalls. One exception is the Black River, the largest river in Jamaica. It is 73 kilometres (44 miles) long, and for 28 kilometres (17 miles) from its mouth it is navigable for small vessels.