Effective storage
8,106.8 10k m³
▲ +4.6 10k m³ (vs Yesterday)Real-time conditions and historical storage trends
Observed at: 09/18/2026 07:00Daily operation date: 09/17/2026 00:00
Source: Water Resources Agency Reservoir Conditions and Daily Reservoir Operations datasets
Storage ratioNormal Storage
99.1%
▲ +0.1% (vs Yesterday)▲ +0.1% (1 hr)
Effective storage: 8,106.8 10k m³ · Effective capacity: 8,180.9 10k m³
Real-time Hydraulic Briefing
Synthesized water storage and flow dynamicsCurrent water storage for 南化水庫 is at 99.1% with a water level elevation of 179.84 m. Storage is up 0.1% compared to yesterday at the same time; inflow (14.3 m³/s) exceeds outflow (0 m³/s), resulting in net storage gain. Primary water supply covers Core municipal water for Tainan, with bidirectional backup pipelines to Kaohsiung.
南化水庫 (ID: 30503) is an official Off-stream Reservoir situated in the Houku Creek, Zengwen River System, operated and managed by Taiwan Water Corporation 6th District Management Office. In operation since 1993, this facility serves as a vital strategic pillar in Taiwan's regional water grid and flood mitigation network.
According to the latest observation, its effective water storage is approximately 8,106.8 (10k m³), with a storage ratio of 99.1% and a real-time water level elevation of 179.84 meters. Hydraulic flow metrics record an inflow of 14.3 m³/s against an outflow of 0 m³/s (net flow: +14.33 m³/s), indicating active reservoir refilling.
Primary functional purposes include Tainan and Kaohsiung Public Water Supply, with key regional supply coverage extending across Core municipal water for Tainan, with bidirectional backup pipelines to Kaohsiung.
Primary Supply Area:Core municipal water for Tainan, with bidirectional backup pipelines to Kaohsiung
Tainan and Kaohsiung Public Water Supply
Water level
179.84 m
▲ +0.01 m (vs Yesterday)Inflow
14.33 m³/s
▼ -0.11 m³/s (1 hr)Total outflow
0 m³/s
— 0.0 m³/s (1 hr)Effective capacity
8,180.9 10k m³
Net Flow Balance
南化水庫 · Real-time hydrological balance and storage dispatch analysis
Inflow (Qin)
14.33 m³/sUpstream catchment runoff inflow rateTotal outflow (Qout)
0 m³/sGate release and flood desilting rateNet Flow Balance (ΔQ)
+14.33 m³/sInflow exceeds outflow; storage volume is increasing24 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
N/A
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
14.33 m³/s
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
南化水庫 · Engineering profile and geospatial information
Managing AgencyTaiwan Water Corporation 6th District Management Office
Facility TypeOff-stream Reservoir
River SystemHouku Creek, Zengwen River System
Effective capacity8,180.9 10k m³
Year Completed1993
Geographic Location
23.0906°N, 120.5361°E台南市 · 南化區
Related Reservoirs in Region
Check real-time conditions and historical trends for other facilities in the same region.
Frequently Asked Questions
南化水庫 · 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.