OpenViz

牡丹水庫

ID: 31201UnclassifiedOn-stream Reservoir

Real-time conditions and historical storage trends

Observed at: 11/02/2026 06:00Daily operation date: 11/01/2026 00:00

Source: Water Resources Agency Reservoir Conditions and Daily Reservoir Operations datasets

Storage ratioNormal Storage
89.3%
▼ -0% (vs Yesterday)— 0.0% (1 hr)

Effective storage: 2,325 10k m³ · Effective capacity: 2,603.7 10k m³

牡丹水庫 real-time hydraulic engineering cross-section牡丹水庫 real-time storage ratio is 89.3%, total outflow is 1 cms.

Real-time Hydraulic Briefing

Synthesized water storage and flow dynamics

Current water storage for 牡丹水庫 is at 89.3% with a water level elevation of 139.94 m. Storage is down 0% compared to yesterday at the same time; inflow and outflow are balanced (inflow 1 m³/s, outflow 1 m³/s) with steady water level. Primary water supply covers Hengchun Peninsula (Hengchun, Checheng, Manzhou, Mudan).

牡丹水庫 (ID: 31201) is an official On-stream Reservoir situated in the Rureng and Mudan Creeks, Sichong River System, operated and managed by Southern Region Water Resources Branch, WRA. In operation since 1995, 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 2,325 (10k m³), with a storage ratio of 89.3% and a real-time water level elevation of 139.94 meters. Inflow (1 m³/s) and outflow (1 m³/s) remain balanced, maintaining stable water storage.

Primary functional purposes include Hengchun Peninsula Municipal & Tourism Water, Maanshan Nuclear Plant Supply, with key regional supply coverage extending across Hengchun Peninsula (Hengchun, Checheng, Manzhou, Mudan).

Primary Supply Area:Hengchun Peninsula (Hengchun, Checheng, Manzhou, Mudan)
Hengchun Peninsula Municipal & Tourism WaterMaanshan Nuclear Plant Supply

Effective storage

2,325 10k m³

▼ -1 10k m³ (vs Yesterday)

Water level

139.94 m

▼ -0.01 m (vs Yesterday)

Inflow

1 m³/s

▼ -0.8 m³/s (1 hr)

Total outflow

1 m³/s

— 0.0 m³/s (1 hr)

Effective capacity

2,603.7 10k m³

Net Flow Balance

牡丹水庫 · Real-time hydrological balance and storage dispatch analysis

Flows Balanced
Inflow (Qin)
1 m³/sUpstream catchment runoff inflow rate
Total outflow (Qout)
1 m³/sGate release and flood desilting rate
Net Flow Balance (ΔQ)
0 m³/sInflow and outflow are balanced; storage remains steady

24 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.

Active Release
Spillway outflowMain spillway gate release or crest free overflow
Closed
24h 待命常閉
0 m³/s
Power outletHydroelectric turbine power generation discharge
Open
1 m³/s
Desilting tunnelBottom desilting and sediment bypass tunnel
Closed
24h 待命常閉
0 m³/s
Drainage tunnelDedicated flood diversion tunnel release
Closed
24h 待命常閉
0 m³/s
Water drawMunicipal water, industrial, or irrigation draw
N/A
24h 待命常閉
N/A
Other outflowEcological baseflow or auxiliary facility release
N/A
24h 待命常閉
N/A

Historical Storage Trends

View historical storage percentage and water volume trends over time.

Reservoir Specifications · Geographic Location

牡丹水庫 · Engineering profile and geospatial information

Managing AgencySouthern Region Water Resources Branch, WRA
Responsible for facility operation and flood dispatch
Facility TypeOn-stream Reservoir
Dam structure and engineering classification
River SystemRureng and Mudan Creeks, Sichong River System
Primary catchment river basin and hydrological system
Effective capacity2,603.7 10k m³
Maximum designed water storage capacity of the dam
Year Completed199531 yrs in operation
Long-term water supply security and flood resilience
Geographic Location
22.1389°N, 120.7933°E屏東縣 · 牡丹鄉
Open in Google Maps

Check real-time conditions and historical trends for other facilities in the same region.

成功水庫

31301
—
Effective storage— 10k m³

甲仙攔河堰

31002
—
Effective storage— 10k m³

Frequently Asked Questions

牡丹水庫 · 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.