Stevensville Conservation Area

09/02/2026

The Niagara Peninsula Conservation Authority has issued a Flood Outlook Statement for the Niagara Peninsula Watershed.

https://alertable.ca/ #/incidents/1d18de3d-dbea-469e-b859-707a7bfe76b1

This notice is intended to advise the public and local municipalities of the status of watercourse and Great Lakes conditions within the Niagara Peninsula and the eastern portions of the City of Hamilton and Haldimand County.

Unsettled weather and the risk of severe thunderstorms is expected for this afternoon and into Thursday morning. Forecasted rainfall amounts of 10 - 40 mm is expected across the watershed. Isolated thunderstorms may produce an additional 25 to 50 mm in localized areas, with total rainfall amounts potentially exceeding 85 to 90 mm in some locations.

While the NPCA does not anticipate major flooding along larger watercourses, flash flooding along small and urbanized watercourses, rapid increase in water levels and localized flooding in low-lying or poorly drained areas may occur. Current water levels are below critical elevations.

The NPCA will continue to monitor conditions closely and issue updates as required. Current flood status information is available at:

- https://npca.ca/flood-status?utm_source=copilot.com
- https://npca.ca/stream-flow-monitoring?utm_source=copilot.com

This notice remains in effect until 12:00 PM on Thursday, September 3rd, 2026, and will be updated as conditions warrant.

Follow the directions of local authorities and look for any updates on the situation.
Residents are advised to stay away from creeks, rivers and other waterbodies
Children and pets should be kept away from waterways
Property owners are encouraged to safely ensure that drainage features-such as culverts, catch basins, and ditches-are free of debris
Municipal and Regional staff are advised to inspect stormwater infrastructure and monitor known flood-prone areas

08/21/2026

Flood Outlook Statement

https://alertable.ca/ #/incidents/0160dd13-e7f0-4bf0-94cf-e59711c6e3ff

The Niagara Peninsula Conservation Authority (NPCA) is advising local municipalities, emergency services, and the public of the potential for flooding within its jurisdiction. This includes the Niagara Peninsula, the southeastern portion of the City of Hamilton, and the eastern portion of Haldimand County.

A slow-moving weather system is expected to bring thunderstorms and significant rainfall from Saturday, August 22, through Monday, August 24. Total rainfall amounts of 40 to 60 mm are possible, with locally higher amounts where thunderstorms develop. Thunderstorms may produce an additional 15 to 25 mm in affected areas.

Major flooding along larger watercourses is not currently anticipated. However, intense rainfall may cause flash flooding along small and urbanized watercourses, rapid increases in water levels, and localized flooding in low-lying or poorly drained areas. Current water levels remain well below critical elevations.

Residents are strongly advised to stay away from creeks, rivers, and other waterbodies. Water levels may rise quickly, and banks may become slippery and unstable.
Children and pets should be kept away from waterways.
Property owners are encouraged to clear debris from culverts, catch basins, and ditches.
Municipal and regional staff are advised to inspect stormwater infrastructure and monitor known flood-prone areas.

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08/08/2026

The Niagara Peninsula Conservation Authority has issued a Water Safety Statement for the Niagara Watershed

https://alertable.ca/ #/incidents/cc4b26b4-63e6-4910-97af-e3454bf26770

This notice is intended to advise the public and local municipalities of the status of the watercourses within the Niagara Peninsula and eastern portions of the City of Hamilton and Haldimand County.

Environment and Climate Change Canada has forecasted localized thunderstorms across Southern Ontario today (Saturday). It is expected to bring isolated but intense periods of rainfall - up to 30 mm/hr. Rainfall accumulations are unpredictable during this time of year but can exceed 50 mm in some areas.

All watercourses are currently below critical levels. While the NPCA does not anticipate major flooding along larger watercourses flash flooding in urbanized and low-lying areas is likely to occur. Overland surface runoff may also occur along smaller watercourses or in flat, poorly drained rural areas - typically within floodplains.

The NPCA will continue to monitor conditions closely and issue updates as required. Current flood status information is available at:

- https://npca.ca/flood-status?utm_source=copilot.com
- https://npca.ca/stream-flow-monitoring?utm_source=copilot.com

This notice remains in effect until 08:00 AM on Sunday, August 9th, 2026, and will be updated as conditions warrant.

Follow the directions of local authorities and look for any updates on the situation.
Residents are strongly urged to stay clear of all creeks, rivers, and waterbodies due to slippery banks and elevated water levels, which pose significant hazards
Property owners are encouraged to safely ensure that drainage features-such as culverts, catch basins, and ditches-are free of debris
Secure basement windows or doors which may be reached by flood waters
Municipal and Regional staff are similarly advised to inspect and clear local stormwater infrastructure.

08/02/2026

Niagara Peninsula Conservation Authority has issued a Flood Outlook Statement for the Niagara Peninsula

https://alertable.ca/ #/incidents/1ee3f3ab-fc8a-4aaa-bcaf-85f7214af41d

This notice is intended to advise the public and local municipalities of the status of watercourse conditions within the Niagara Peninsula and the eastern portions of the City of Hamilton and Haldimand County.

A low-pressure system is tracking through Southern Ontario today (Sunday). It is expected to bring widespread rainfall across the Niagara Peninsula, with a risk of isolated thunderstorms in some areas. General rainfall amounts of 20 to 30 mm are possible throughout the south, with thunderstorms potentially producing an additional 10 to 25 mm.

Environment Canada models indicate that localized thunderstorms could generate rainfall amounts exceeding 50 mm, in addition to the general rainfall. As a result, total precipitation amounts could exceed 80 mm in some southern areas.

As the system exits through the southeastern corridor tomorrow (Monday), an additional 10 to 15 mm of rainfall is forecast, along with a further 10 to 15 mm from localized thunderstorms.

Over the next two-day period (Sunday-Monday), southern Ontario could receive cumulative rainfall totals of 30 to 45 mm from general precipitation, with localized thunderstorms contributing an additional 20 to 40 mm. In areas affected by the heaviest thunderstorms, total rainfall could exceed 80 mm.

While the NPCA does not anticipate major flooding along larger watercourses flash flooding in urbanized and low-lying areas is likely to occur. Overland surface runoff may also occur along smaller watercourses or in flat, poorly drained rural areas - typically within floodplains.

The NPCA will continue to monitor conditions closely and issue updates as required. Current flood status information is available at:

- https://npca.ca/flood-status?utm_source=copilot.com
- https://npca.ca/stream-flow-monitoring?utm_source=copilot.com

This notice remains in effect until 12:00 PM on Monday, August 3rd, 2026, and will be updated as conditions warrant.

Follow the directions of local authorities and look for any updates on the situation.
Residents are strongly urged to stay clear of all creeks, rivers, and waterbodies due to slippery banks and elevated water levels, which pose significant hazards.
Property owners are encouraged to safely ensure that drainage features-such as culverts, catch basins, and ditches-are free of debris.
Secure basement windows or doors which may be reached by flood waters.
Municipal and Regional staff are similarly advised to inspect and clear local stormwater infrastructure.

07/27/2026

Niagara Peninsula Conservation Authority has issued a Flood Outlook Statement for the Niagara Peninsula Watershed.

https://alertable.ca/ #/incidents/8bd8abcd-28b8-4057-bcd0-141cad37426c

This notice is intended to advise the public and local municipalities of the status watercourse and Great Lakes conditions within the Niagara Peninsula and the eastern portions of the City of Hamilton and Haldimand County.

There is a risk of severe thunderstorms capable of producing torrential rainfall - between 50 - 75 mm - arriving this evening and into tomorrow morning. Given the instability of storm behaviour during this time of year, there remains some uncertainty as to where the highest rainfall amounts will be.

While the NPCA does not anticipate major flooding along larger watercourses, flash flooding in urbanized and low-lying areas is likely to occur. Overland surface runoff may also occur in flat, poorly drained rural areas - typically within floodplains - during intense rain events when culverts and ditches become overwhelmed and force water to spread outside of defined channels.

This notice remains in effect until 12:00 PM on Tuesday, July 28th, 2026, and will be updated as conditions warrant.

Follow the directions of local authorities and look for any updates on the situation.
Residents are strongly urged to stay clear of all creeks, rivers, and waterbodies due to slippery banks and elevated water levels, which pose significant hazards.
Property owners are encouraged to safely ensure that drainage features-such as culverts, catch basins, and ditches-are free of debris.
Secure basement windows or doors which may be reached by flood waters.
Municipal and Regional staff are similarly advised to inspect and clear local stormwater infrastructure.

07/21/2026

Niagara Peninsula Conservation Authority has issued a Flood Outlook Statement for the Niagara Peninsula Watershed.

https://alertable.ca/ #/incidents/37cbfc6a-6ab9-47ae-a9d5-4d1970c59589

The Niagara Peninsula Conservation Authority (NPCA) is advising the public and local municipalities of the potential for flooding within its jurisdiction in the afternoon of Tuesday July 21st, 2026. This includes the Niagara Peninsula, the southeastern portion of the City of Hamilton, and the eastern portion of Haldimand County.

The Niagara Peninsula Watershed is currently under a Severe Thunderstorm Warning from Environment and Climate Change Canada (ECCC). Heavy rainfall throughout the watershed, particularly near Lake Ontario and into Niagara Falls, has already resulted in over 70 mm of rain this afternoon.

This slow-moving system could drop between 50 - 100 mm by late afternoon. Another ensuing storm currently tracking our way may bring additional rain and thunderstorms to the area, resulting in further flooding due to saturated soils and inundated storm water infrastructure. While the NPCA does not anticipate major flooding along larger watercourses, flash flooding in urbanized and low-lying areas is likely to occur or already be occurring.

Follow the directions of local authorities and look for any updates on the situation.
Residents are strongly urged to stay clear of all creeks, rivers, and waterbodies due to slippery banks and elevated water levels.
Property owners are encouraged to safely ensure that drainage features-such as culverts, catch basins, and ditches-are free of debris.
Municipal and Regional staff are similarly advised to inspect and clear local stormwater infrastructure.

06/17/2026

Niagara Peninsula Conservation Authority has issued a Flood Outlook Statement for the Niagara Peninsula Watershed

https://alertable.ca/ #/incidents/6cf5fba1-f795-4370-9d75-da91a9429279

The Niagara Peninsula Conservation Authority (NPCA) is advising the public and local municipalities of the potential for flooding within its jurisdiction late Wednesday June 17 into Thursday June 18, 2026. This includes the Niagara Peninsula, the southeastern portion of the City of Hamilton, and the eastern portion of Haldimand County.

The Niagara Peninsula Watershed is currently under a Special Weather Statement, with forecasted rainfall up to 40 mm or greater with the risk of severe thunderstorms moving into the area this evening near midnight. These storms may also produce gusts of 70 to 90 km/h with heavy downpours of rain of up to 20 mm/hour in some locations.

Some watercourses are still draining the precipitation/runoff from the storm this past Sunday and are expected to respond rapidly to these rainfall amounts and intensities. While the NPCA does not anticipate major flooding along larger watercourses, nuisance flooding in low-lying areas adjacent to smaller streams and creeks is likely.

This notice remains in effect until 9:00 AM on Friday, June 19, 2026, and will be updated as conditions warrant.

Follow the directions of local authorities and look for any updates on the situation.
Residents are strongly urged to stay clear of all creeks, rivers, and waterbodies due to slippery banks and elevated water levels.
Property owners are encouraged to ensure that drainage features-such as culverts, catch basins, and ditches-are free of debris.
Municipal and Regional staff are similarly advised to inspect and clear local stormwater infrastructure.

06/14/2026

The Niagara Peninsula Conservation Authority has issued a Flood Watch for the Niagara Peninsula Watershed

https://alertable.ca/ #/incidents/5c4d0e6e-3ca1-4cba-ae42-4a092bab6254

The Niagara Peninsula Conservation Authority (NPCA) is advising the public and local municipalities of the potential for flooding within its jurisdiction on Sunday, June 14, 2026. This includes the Niagara Peninsula, the southeastern portion of the City of Hamilton, and the eastern portion of Haldimand County.

The Niagara Peninsula Watershed is currently under a Severe Thunderstorm Watch, with forecasted rainfall totals of 30-50 mm. The watershed has already received 10-30 mm of rain in a short period, with the northern areas experiencing the highest amounts. Current forecasts indicate an additional 25-50 mm of precipitation is possible.

Smaller watercourses are expected to respond rapidly to these rainfall amounts. While the NPCA does not anticipate major flooding along larger watercourses, nuisance flooding in low-lying areas adjacent to smaller streams and creeks is likely.

Follow the directions of local authorities and look for any updates on the situation.
Residents are strongly urged to stay clear of all creeks, rivers, and waterbodies due to slippery banks and elevated water levels, which pose significant hazards.
Property owners are encouraged to ensure that drainage features-such as culverts, catch basins, and ditches-are free of debris.
Municipal and Regional staff are similarly advised to inspect and clear local stormwater infrastructure.

04/02/2026

Niagara Peninsula Conservation Authority has issued a Flood Outlook Statement for the Niagara Peninsula Watershed Updated

https://alertable.ca/ #/incidents/dc7fe4a0-99b5-486a-86a7-b6b1fda2b6e9

Over the past four days, the watershed has received approximately 15 to 50 mm of rainfall, with the southern Niagara Peninsula experiencing the highest amounts. This rainfall has resulted in increased water levels and flows in local creeks and rivers.

Additional rainfall is forecast through the weekend, with an additional 20 to 30 mm expected. Light rain is forecast to begin this afternoon and taper off Friday afternoon, with another round of rainfall expected on Saturday. The heaviest rainfall is anticipated Saturday night.

The combination of ongoing rainfall, elevated water levels, and saturated ground conditions may cause further increases in water levels and could lead to localized flooding, particularly during periods of heavy rainfall. Rapid runoff into ditches, creeks, rivers, and storm sewer systems is possible. At this time, creeks and rivers remain below critical flood levels, and major or widespread flooding is not anticipated. However, additional rainfall could result in minor flooding in low-lying and flood-prone areas.

Follow the directions of local authorities and look for any updates on the situation.
Use caution and stay away from rivers, creeks and all waterbodies.
If it is safe to do so, clear ditches/culverts/catch basins on your property to ensure proper drainage.
Municipalities are advised to check for debris blocking storm infrastructure.

03/30/2026

Niagara Peninsula Conservation Authority has issued a Flood Outlook Statement for the Niagara Peninsula Watershed

https://alertable.ca/ #/incidents/dc7fe4a0-99b5-486a-86a7-b6b1fda2b6e9

This notice is intended to advise residents and local municipalities of a potential risk of flooding across the Niagara Peninsula, including parts of southeastern Hamilton and eastern Haldimand County.

Between 30 and 60 mm of rainfall is forecast from late Monday night through Wednesday afternoon. Because the ground is already saturated, this rainfall may lead to localized flooding, particularly during heavy downpours. Rapid runoff into ditches, creeks, rivers, and storm sewer systems is possible.

Creeks and rivers in the area are currently running slightly higher than normal but remain well below flood levels. Additional rain may cause water levels to rise and could result in minor flooding in low-lying and flood-prone areas. Smaller waterways-such as 12 Mile Creek in Pelham, Welland, and Thorold, and 4 Mile Creek in Niagara-on-the-Lake-can rise quickly during thunderstorms. At this time, major or widespread flooding is not expected.

Follow the directions of local authorities and look for any updates on the situation.
Use caution and stay away from rivers, creeks and all waterbodies.
If it is safe to do so, clear ditches/culverts/catch basins on your property to ensure proper drainage.
Municipalities are advised to check for debris blocking storm infrastructure.