Be Ready Mānoa — Situational Awareness

At a glance

stream stage

—

feet · Woodlawn Dr

discharge

—

ft³/s (cfs)

5-min rainfall

—

in/5min · Lyon Arboretum

Mānoa stream alert

—

stream · rainfall · cascade

USGS stream gauges · upstream indicators + primary gauge

Waihi Stream

—

ft · upper

–

~10–15 min

Waiakeakua Stream

—

ft · mid-valley

–

~5–10 min

Woodlawn Drive

—

ft · primary

–

Loading cascade data…

Waihi Stream Loading...

Site 16238500 · Upper watershed · upstream indicator

Stage

—

feet

Discharge

—

cfs

Reading

—

ago

Stage trend — past 6 readings (~90 min)

Waiakeakua Stream Loading...

Site 16240500 · Mid-valley · upstream indicator

Stage

—

feet

Discharge

—

cfs

Reading

—

ago

Stage trend — past 6 readings (~90 min)

Mānoa Stream at Woodlawn Drive · primary gauge Loading...

Site 16241600 · Drainage area 4.28 sq mi · elev. 130 ft · updates every 15 min

Stage

—

feet

Discharge

—

cfs

Reading

—

ago

Flood stage indicator · official NWS thresholds

NormalAction 4.5ftMinor 8ftMod 12ftMajor 13ft

Stage trend — past 6 readings (~90 min)

Stream context · NWS flood stages

Action stage 4.5 ft

Minor flood 8.0 ft

Moderate flood 12.0 ft

Major flood 13.0 ft

Mar 23 2026 peak ~12.5 ft

Record (Mar 2006) ~17 ft

Rain gauges · Mānoa / Nuʻuanu corridor

HI Mesonet Live Rainfall Loading...

Stations update every 15 min · 4-second sensor scan · Provisional data · UH Mānoa Mesonet

Lyon Arboretum

HCDP #0501 · Upper Mānoa

— in / 5min

24hr: —

Reading: —

Kalāwahine

HCDP #0506 · Mānoa–Nuʻuanu ridge

— in / 5min

24hr: —

Reading: —

Pālolo Mauka

HCDP #0532 · Pālolo Valley

— in / 5min

24hr: —

Reading: —

⚠️

NWS radar · Hawaii NEXRAD

Live Doppler Radar

NWS Live

Loading... · RainViewer · NEXRAD data · Updates every 2 min

Open full radar ↗

Reflectivity key: ■ Light · ■ Moderate · ■ Heavy · ■ Very heavy · ■ Intense · ■ Extreme | Use "Storm Total Precip" to assess accumulated rainfall during an event

⚗ Test mode — heavy rainfall alert simulation

NWS alerts · Oʻahu

Fetching alerts...

USGS 16238500 · Waihi Stream

USGS 16240500 · Waiakeakua Stream

USGS 16241600 · Mānoa Stream

UH Mesonet · rain gauges

weather.gov · alerts

rainviewer.com · NEXRAD radar

Loading data...