Observers from a small plane reported unusual green color in lakes and ponds, raising concerns about lake health and the potential for invasive species.

Kodiak set a new one-day precipitation record on July 10, 2025, when 2.11 inches of rain fell—surpassing the previous July 10 record of 1.43 inches set in 1919.

Angus Lake near Sachs Harbour rapidly drained over the course of early July 2025 after permafrost thaw created a water channel, emptying the lake into the Sachs River and leaving a large crater.

The Kachemak Bay National Estuarine Research Reserve detected Pseudo-nitzschia at bloom levels in Kachemak Bay starting July 4. This diatom can produce the toxin domoic acid, associated with amnesic shellfish poisoning, though toxin production is not yet confirmed. Observed bird deaths and marine mammal strandings have spurred collection of mussel samples for lab testing.

After a snowy winter followed by a week of heavy rain, over 40 cabins near Lake Françoys-Malherbe outside Salluit, Nunavik, have been flooded, with some sitting in water and one appearing to float.

The Taku River near Juneau is rising rapidly due to a glacier lake outburst flood, approaching minor flood thresholds within the next 24–36 hours.

The Alaska Department of Fish and Game has closed the Ninilchik River to all sport fishing from June 23 through July 15 to help meet king salmon escapement and broodstock collection goals.

Khaled Elgamal recounts surviving a rockfall at Bow Glacier Falls in Banff National Park that killed his friend Hamza Benhilal and another hiker, while more than a dozen others were injured or evacuated.

The Noatak River's persistent erosion is threatening key transportation infrastructure including the adjacent road and airstrip.

High water on the Noatak River is accelerating erosion and causing the destruction of a decades-old cement pillow revetment wall in Noatak.

A significant flood-induced washout at milepost 315 on the Dalton Highway has closed the only road link to Alaska’s North Slope oil fields between mileposts 305 and 356, with emergency repairs and ongoing monitoring underway.

On June 13, heavy rain with hail hit Noyabrsk, leading to localized flooding that submerged sidewalks, parking lots and even entered apartment entrances.

Fishing on the Kenai and Russian rivers opened June 11, but as of the previous evening only one sockeye salmon had been counted at the Russian River weir—compared to more than 700 at this time last year.

On June 10, rising water levels on the Anadyr River flooded the villages of Markovo and Ust-Belaya in Anadyrsky District, inundating roads, the airport runway, and riverfront infrastructure but causing no disruption to vital services.

A vessel towing two barges ran aground in the Yenisei River near Kazachinsky District, Krasnoyarsk Krai, on June 8, 2025, spilling around 30 metric tons of diesel fuel over a 50-km stretch of shoreline.

Unusually heavy rainfall struck northern Iceland’s town of Ólafsfjörður on 4–5 June 2025, prompting fire brigade pumping operations, minor debris flows, and continued landslide and avalanche hazards. A debris-flow specialist warns such downpours occur only once every few decades.

Tomtasjön, a lake north of Uppsala drained in the 1860s, has been restored to a 40-hectare waterbody. Landowners, with support from the County Administrative Board and EU funds, excavated the basin, and wildlife is now thriving.

Heavy rains in late May triggered multiple small landslides in Ketchikan, Alaska, blocking roads and damaging a home but causing no injuries.

Residents in Old Crow, Yukon were evacuated to a local school early on May 24 after Porcupine River levels rose sharply, but returned home later the same day as flood risk diminished under an ongoing evacuation alert.

Up to 1,000 gallons of water used in mining operations reached a creek and tundra, as an estimated 400,000 gallons spilled into containment areas and a gravel road.