Roper River

Roper River
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Data
location	Northern Territory ( Australia )
River system	Roper River
Drain over	Roper River → Gulf of Carpentaria
confluence	Mount Solitary ( Elsey National Park near Mataranka ) 14 ° 57 ′ 11 ″  S , 133 ° 11 ′ 35 ″  E
Source height	126  m
muzzle	Gulf of Carpentaria near Port Roper ( Limmen National Park ) Coordinates: 14 ° 43 ′ 56 "  S , 135 ° 23 ′ 33"  E 14 ° 43 ′ 56 "  S , 135 ° 23 ′ 33"  E
Mouth height	0  m
Height difference	126 m
Bottom slope	0.32 ‰
length	400 km
Catchment area	81,794 km²
Left tributaries	Waterhouse River , Chambers River , Maiwok Creek, Flying Fox Creek, Jalboi River , Sandy Creek, Wilton River , Walmudga Creek, Phelp River , Painnylatya Creek
Right tributaries	Roper Creek, Elsey Creek, Strangways River , Packsaddle Creek, Fizzer Creek, Sherwin Creek, Hodgson River , Mountain Creek
Flowing lakes	Red Lily Lagoon, Bulbul Waterhole, Gambana Waterhole
Small towns	Elsey, Buddawarka, Roper Bar, Urapunga, Ngukurr, Port Roper
Communities	Moroak, delivery
Residents in the catchment area	3364
Navigable	145 km to the flood limit at the Roper Bar

The Roper River is a river in the north of the Australian territory Northern Territory . Ludwig Leichhardt named it in October 1845 after John Roper , a member of his first Australian expedition from 1844 to 1845.

geography

River course

The Roper River arises in Elsey National Park near the town of Mataranka from the confluence of the Waterhouse River and Roper Creek and flows into the Gulf of Carpentaria after 400 km . The river is navigable for a length of about 145 km to the tidal limit at the ford in Roper Bar .

The Roper River is part of the southern border of the Arnhem Land and also represents the northern border of the Limmen National Park .

Tributaries with mouth heights

• Roper Creek - 126 m
• Waterhouse River - 126 m
• Elsey Creek - 107 m
• Chambers River - 94 m
• Strangways River - 62 m
• Packsaddle Creek - 49 m
• Maiwok Creek - 45 m
• Flying Fox Creek - 35 m
• Fizzer Creek - 30 m
• Jalboi River - 24 m
• Sandy Creek - 22 m
• Sherwin Creek - 16 m
• Hodgson River - 12 m
• Wilton River - 9 m
• Mountain Creek - 6 m
• Walmudga Creek - 5 m
• Phelp River - 1 m
• Painnylatya Creek - 0 m

Flowing lakes

• Red Lily Lagoon - 104 m
• Bulbul Waterhole - 93 m
• Gambana Waterhole - 39 m

climate

The temperatures in Ngukurr (Lage) reach their maximum in the months of November and December with mean maxima of 38.9 ° C and 37.8 ° C and mean minima of 24.9 ° C and 25.4 ° C. The coldest month is July with a mean maximum of 29.6 ° C and a mean minimum of 15.1 ° C.

The annual rainfall averages 816 mm, with strong differences occurring over the course of the year: In the rainiest month, January, there is 184 mm, in the driest month, August, only 0.7 mm.

flora

Eucalyptus forests represent the predominant type of vegetation along the Roper River .

In a 1983 survey at the farm St. Vidgeon Station , 65 km east of Roper Bar, near the river and the like. a. the following predominant species were found: Eucalyptus camaldulensis , Melaleuca spp. , Cathormion umbellatum , Barringtonia acutangula and Atalaya hemiglauca .

Individual evidence

1. ^ ^{A b c d} Map of Roper River, NT . Bonzle.com
2. ↑ britannica.com (Eng.)
3. ↑ Overview of the Roper River Catchment (English) ( Memento of the original from March 28, 2011 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. 
4. ↑ Roper River River Basin Summary (English) ( Memento of the original from March 19, 2011 in the Internet Archive ) Info: The archive link was automatically inserted and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. (PDF; 469 kB) 
5. ↑ Climate data of the Ngukurr station
6. ↑ The Land Systems of St Vidgeon Station (Eng.)