Dapu Zengwen Reservoir is a reservoir in Dapu Township, Chiayi County, and Taiwan's largest by storage capacity; completed in October 1973 with a dam height of 133 meters and a full-pool surface area of 17.14 square kilometers, its lakeside road rises and falls with the terrain to reveal the reservoir from multiple vantage points. Dapu's signature dish, casserole fish head, is made with freshly caught reservoir bighead carp — an essential culinary pairing for a visit.
Zengwen Reservoir broke ground in July 1967 and was completed in October 1973, with a dam height of 133 meters and a full-pool surface area of about 17.14 square kilometers. Its original design capacity of about 748.4 million cubic meters made it Taiwan's largest reservoir by storage volume at the time of construction; sediment accumulation has since reduced its measured total capacity to about 506 million cubic meters (as of 2023), though it remains Taiwan's largest reservoir by storage capacity today. Dapu Township's signature dish, casserole fish head, is made from freshly caught reservoir bighead carp — one of the traditional 'four major farmed fish' — simmered with local makino bamboo shoots.
Highlights of Zengwen Reservoir
Zengwen Reservoir was completed in 1973, formed by damming the Zengwen River. Its primary functions are agricultural irrigation, domestic water supply, and hydroelectric power generation. The dam body is located in Dapu Township; its scale is imposing, and visitors can walk along the dam crest to look out over the reservoir surface. Water levels vary noticeably with the seasons and rainfall: the lake is at its broadest during the wet season, and during the dry season sections of the reservoir banks are exposed, making the terrain contours more clearly visible.
Multiple scenic overlooks are set up along the lakeside road, each offering a different perspective from various elevations overlooking the reservoir. On clear days, mountain shadows reflected on the lake surface create rich layers of color. The reservoir nurtures various fish species, most notably giant grouper and bighead carp (commonly called "white carp"); restaurants in Dapu Township feature reservoir fish as their signature ingredient, serving freshly caught lake fish dishes — an essential culinary pairing for a reservoir visit.
How to Make the Most of Your Visit
Practical Information
Getting There & Timing
- By car: head south from Chiayi City along Highway 3, through Dapu Township toward Zengwen Reservoir. The full journey takes about 1 hour 30 minutes; mountain roads are winding — drive with care.
- No direct public transport is available; driving or renting a car is necessary. The lakeside road may be partially restricted after typhoons or heavy rain; check road conditions before departure.
- Open year-round; spring and autumn have pleasant temperatures. Summer is hot but the high-water season scenery is spectacular; the dry winter season reveals more layered terrain along the reservoir banks.
Nearby Connections
- The upstream area of Zengwen Reservoir leads to Danayigu Nature Park (Shanmei Village, Alishan Township) — a same-day itinerary combining Tsou indigenous community ecotourism is feasible.
- Heading north extends to Chiayi City's Dapu Street (a settlement beside Dapu Reservoir) for lake fish cuisine before returning to Chiayi City.
Source: Southern Region Water Resources Bureau's official Zengwen Reservoir information and Wikipedia entry on "Zengwen Reservoir." Photos pending replacement with Dio's own shots.
Frequently Asked Questions
Is Zengwen Reservoir Taiwan's largest reservoir?
Yes, Zengwen Reservoir has Taiwan's largest storage capacity; its 1973 design capacity was about 748.4 million cubic meters, and it still ranks first nationwide today.
How tall is the Zengwen Reservoir dam?
The dam stands 133 meters tall and is located within Dapu Township, Chiayi County.
What is Dapu Township's must-try reservoir fish dish?
The local specialty is casserole fish head, made with freshly caught reservoir bighead carp simmered with makino bamboo shoots.
Sources
- 曾文水庫 - 維基百科 — 完工年(1973)、壩高(133m)、設計總容量(7.484億m³)
- 水利署全球資訊網-主要水庫簡介-曾文水庫 — 官方最新蓄水容量測量數據(2023年測)