Lake Sentani is a tropical, shallow, and at low-altitude open lake located at the northeast extremity of the Intan Jaya Regency in the Indonesian province of Papua, about 20 kilometres (12 mi) from the provincial capital, Jayapura City. The lake, which is considered by the local population as the home of the rainbows, is part of the Cyclops Strict Nature Reserve and contains many species of fish that cannot be found anywhere else in the world. Lake Sentani lies at the foot of the Mesozoic mafic and ultramafic rocks of the Cyclops ophiolite mountains in a fault-controlled depression at an elevation of 73 metres (240 ft) above the level of the sea. Sentani is an irregularly shaped body with approximate maximum length extending from east to west of 28 kilometres (17 mi) and, from north to south, 19 kilometres (12 mi) of breadth. With a surface area of 104 square kilometres (40 sq mi), Lake Sentani is the largest lake of the Intan Jaya region. Lake Sentani receives its water primarily from direct precipitation with an average annual rainfall around the lake of about 2 metres (6.6 ft), and by mountain streams. The average evaporation on the lake is about 0.4 metres (1.3 ft) with seasonal variation in inflow. The lake outflows into the Jafuri and Tami rivers to the Pacific Ocean near the Papua New Guinea border.
Lake Sentani, the best studied of Irian Jaya lakes, is relatively stable and intact. It is widely believed to have evolved by the tectonic damming and uplift of an arm of the sea, but such a connection has not been demonstrated yet. To best experience the excitement of boating on the lake, rent a motorized canoe available at one of the villages. The guide who has taken you on the overnight tour from Jayapura will show you where to get one of the dugout canoes. Experience the thrill of being caressed by the warm breeze while speeding on the lake, photograph the stilt houses, know the local, and make friends with your guide, and eventually boldly brag about it in the travel blogs.
Lake Sentani and its surrounding areas was once the training field for amphibious aircraft landings. It was built by the Japanese and taken over by the US Army in 1944. American war legend, General McArthur was said to have gazed on the lake and its 22 islets, and came up with his victorious island-hopping strategy. Living as fish farmers, and the close location to the provincial capital, are reasons why most of the population around the lake are open to visitors. Stilt houses with ponds and nets are common landscapes. The lake is home to at least 33 species of fish, of which almost half of them are native. The Sawfish (Pristis microdon) was once the premier host of the lake, which today is said to have become extinct. This fish is one of the indigenous ornaments found on Sentani’s woodcrafts. Hang one of these items on your wall as a mark that you have been dramatically introduced to the wilderness of Papua.
In the village of Taturi, stone paintings are a wonder worth visiting. Located on a small hill at the bank of the lake, it is a sight to record while canoeing. Another village offering a beautiful daytrip is the Doyo Lama, a place for rock painting art. It is a fantastic start to understand the culture of Papua. Remnants of World War II scatter around the lake as it was an important command headquarters during the war. On one of the hills, on Mount Ifar, a monument has been built to commemorate American General McArthur’s military command in the Pacific and his victory. Many visitors consider it a must see tourist attraction as it also offers a spectacular view of the lake with as its background the Cyclops Mountains. Villages around Lake Sentani have different customs, yet originate from a few common cultures as evident from similar beliefs and rites. The Isolo, for example, is a ceremony that unites the diverse cultures in the 24 villages around the lake. It is a ceremony staged when merchandise are delivered from one village to another. It can be also be seen as part of the Lake Sentani Festival staged during the month of June.
Asei Island is one of the artist’s homes in the vicinity of the lake. Asei islanders are known to create interesting motifs painted on bark cloths. Bark cloth is a traditional apparel for Sentani women, and mostly women are those who catch fish on the lake. Among the motifs are spirals that symbolize the swirls of Lake Sentani, there is the crocodile, the sawfish or swordfish of Sentani, as well as combined motifs found in the Asmat Tribe like the bipane, a wild boar tusk symbol, and Asmat human figures. The sale of Asmat motifs at Lake Sentani is one of the unspoken understandings among the Papuan artists. The Lake Sentani Cultural Festival is a huge attraction staged yearly in Kalkote, Sentani. Conducted at an altitude of 75 meters above sea-level, the festival stages war dances on boats, which is a spectacular attraction for visitors. Several lake-villages representatives from around Papua and Indonesia participate to show their skills and cultural similarities. Two previous festivals had been successfully staged on the Lake.
Sumber dari : https://en.wikipedia.org/wiki/Lake_Sentani
Sumber dari : http://www.indonesia.travel/en/destination/473/lake-sentani