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No official flood warning is active nearby and the closest river stations are within normal ranges.
Updated 2026-10-10 12:32:43 UTC · Official GOV.UK warnings · Flood preparation & help guide
North Warnborough is a village in the Hart district of Hampshire, England. It is in the civil parish of Odiham. It is located less than 2 miles (3.2 km) south of the town of Hook, on the opposite side of the M3 motorway, and just north-west of the village of Odiham. The Basingstoke Canal passes through the village, and the River Whitewater flows to the north.
Towns and villages near North Warnborough with a page of their own: the homes in a flood risk area there, the nearest river gauges, and recorded floods.
Place names: Contains OS data © Crown copyright and database rights 2026. Contains Royal Mail data © Royal Mail copyright and database right 2026. Contains National Statistics data © Crown copyright and database right 2026. Licensed under the Open Government Licence v3.0.
The nearest watercourse on the river map is the River Whitewater, about 10 m from the middle of North Warnborough's gauges. It flows into Blackwater River about 16 km downstream.
A gauge downstream shows water that has already passed this point; one upstream sees it first. Distances along the river are from the point on the River Whitewater nearest the middle of North Warnborough's gauges. From Ordnance Survey’s river map (OS Open Rivers), which leaves out small streams, ditches and culverts, so a nearer one may exist. This describes where water goes on the map; it says nothing about flooding at any address. Contains OS data © Crown copyright and database rights 2026.
North Warnborough is monitored by 1 Environment Agency river level station on the River Whitewater, in Hampshire. Water levels are updated every 15 minutes, providing real-time flood monitoring for the area.
The River Whitewater is monitored by 1 station (Lodge Farm). Each station records water levels continuously, with data synced to FloodRadar every 5 minutes.
There are 8 Environment Agency flood warning areas within 10km of North Warnborough. When the EA issues a flood warning for any of these areas, it will appear on this page. These include: River Loddon at Old Basing including Wildmore, Hampshire; River Whitewater including North Warnborough, Hook and Riseley and the River Hart including Crondall, Crookham Village, Hartley Wintney, Riseley and Fleet; River Hart at Crookham Village, Hartley Wintney and Riseley including Dogmersfield, Hampshire; River Whitewater at North Warnborough, Hook and Riseley including Heckfield, Hampshire.
There are 3 storm overflows within 5km of North Warnborough. None of the 3 with a reporting monitor are currently discharging. Enable "Sewage" on the map above to see their locations.
Each has its own page of live status and past discharges:
If flooding is forecast in North Warnborough, call Floodline on 0345 988 1188 for the latest information. Move valuables upstairs, turn off gas and electricity if safe to do so, and avoid walking or driving through flood water. Sign up for flood warnings on any station page above to receive email alerts when water levels rise. For emergency numbers, a preparation checklist and insurance guidance, see our flood help & preparation guide.
North Warnborough gets about 766 mm of rain a year on average (wettest month November, 88 mm; driest May, 49 mm). That is 34% drier than the UK as a whole, which averages 1,163 mm a year. See the rain gauges →
A thirty-year average for the area, not a forecast and not a flood risk on its own. Source: Met Office HadUK-Grid 1991–2020 (5 km grid), 0.8 km away. Average rainfall: HadUK-Grid v1.3.2, Met Office. Contains public sector information licensed under the Open Government Licence v3.0.
Floods whose mapped extent (EA Recorded Flood Outlines) reached within ~5 km of the town centre — most recent first. These are records of mapped extents, not a full list of floods. See them on the map →
Records, not floods: no outline on the record is not evidence a place has not flooded.
Current verdict: Normal. No official flood warning is active nearby and the closest river stations are within normal ranges.
North Warnborough has river level monitoring on River Whitewater — 1 monitoring station in total.
Use the GOV.UK Check for Flooding service (check-for-flooding.service.gov.uk) or call Floodline on 0345 988 1188 (24 hours). You can also set up free FloodRadar email or browser alerts from any station page above.
Follow official advice: move valuables and vehicles to safety, never walk or drive through flood water, turn off gas and electricity if safe, and check on vulnerable neighbours. See our flood preparation guide at floodradar.co.uk/flood-help.
Yes — the Environment Agency's Recorded Flood Outlines dataset shows 5 recorded flood extents around the town centre since 1703, most recently in 1947. That is a count of mapped extents, not of separate floods. Records, not floods: no outline on the record is not evidence a place has not flooded. See the flood history link below.
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