Effective storage
N/A
— 0.0 10k m³ (1 hr)Real-time conditions and historical storage trends
Observed at: —Daily operation date: 10/31/2026 00:00
Source: Water Resources Agency Reservoir Conditions and Daily Reservoir Operations datasets
Facility Operation
—N/A
Effective capacity: 919.7 10k m³ (Desilting & flood regulation) · Run-of-river facility · Primarily raises river level for diversion/water supply without storage ratio monitoring
Real-time Hydraulic Briefing
Synthesized water storage and flow dynamics蘭潭水庫 (Off-stream Reservoir) is a major hydraulic facility managed under the Water Resources Agency. Primary water supply covers Chiayi City Public Water.
蘭潭水庫 (ID: 30302) is an official Off-stream Reservoir situated in the Luliao Creek, Bazhang River System, operated and managed by Taiwan Water Corporation 5th District Management Office. In operation since 1944, this facility serves as a vital strategic pillar in Taiwan's regional water grid and flood mitigation network.
Primary functional purposes include Chiayi City Water Buffer & Tourism, with key regional supply coverage extending across Chiayi City Public Water.
Primary Supply Area:Chiayi City Public Water
Chiayi City Water Buffer & Tourism
Water level
N/A
— 0.0 m (1 hr)Inflow
N/A
▲ +0.01 m³/s (1 hr)Total outflow
N/A
— 0.0 m³/s (1 hr)Effective capacity
919.7 10k m³
Net Flow Balance
蘭潭水庫 · Real-time hydrological balance and storage dispatch analysis
Inflow (Qin)
N/AUpstream catchment runoff inflow rateTotal outflow (Qout)
N/AGate release and flood desilting rateNet Flow Balance (ΔQ)
N/AOfficial real-time inflow/outflow telemetry unavailable24 小時水文吞吐平衡走勢
雙向對稱流量觀測（上方為上游入流，下方為大壩放流，穿梭折線為淨出入差額）Discharge Gates & Facilities
Real-time telemetry for spillways, drainage tunnels, desilting tunnels, and power outlets.
Spillway outflowMain spillway gate release or crest free overflow
24h 待命常閉
Power outletHydroelectric turbine power generation discharge
24h 待命常閉
Desilting tunnelBottom desilting and sediment bypass tunnel
24h 待命常閉
Drainage tunnelDedicated flood diversion tunnel release
24h 待命常閉
Water drawMunicipal water, industrial, or irrigation draw
24h 待命常閉
Other outflowEcological baseflow or auxiliary facility release
24h 待命常閉
Historical Storage Trends
View historical storage percentage and water volume trends over time.
Reservoir Specifications · Geographic Location
蘭潭水庫 · Engineering profile and geospatial information
Managing AgencyTaiwan Water Corporation 5th District Management Office
Facility TypeOff-stream Reservoir
River SystemLuliao Creek, Bazhang River System
Effective capacity919.7 10k m³
Year Completed1944
Geographic Location
23.4717°N, 120.4856°E嘉義市 · 東區
Related Reservoirs in Region
Check real-time conditions and historical trends for other facilities in the same region.
Frequently Asked Questions
蘭潭水庫 · Key insights into reservoir metrics, release mechanisms, and facility operations
FAQ
Total capacity is the total physical volume of the reservoir basin.
In contrast, effective storage refers to the usable volume available for public, agricultural, or power supply above dead storage and sediment levels.