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Earliest River Break Up Ever

20 Apr 2016

Denali National Park, Alaska, United States

Earliest Tokositna River break up ever in Denali State Park.

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	Seasonal Timing	505
	Weather	221
	Ice / Snow Change	179
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	Extreme Temperature	87
	Surface Waters / Wetlands	83
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	Unusual Range / Sighting	23
	Marine Mammals	23
	Fish	21
	Insects	21
	Harvest Change	18
	Energy	17
	Livestock	16
	Unusual Animal Behavior	14
	Death / Die-off / Decline	14
	Flooding / Draining	12
	Rain on Snow	12
	Fire	12
	Unusual Size / Abundance	11
	Pets	11
	Water Security	11
	Invertebrates	10
	Sanitation	10
	Air Quality	8
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	Reptiles	4
	Thunderstorm	4
	Aquaculture	3
	Deformity / Disease / Injury	3
	Glacier Change	3
	Parasite	3
	Storm Surge	3
	Acute Illness	2
	Atmosphere	2
	Fisheries	2
	Infestation	2
	Cyclone / Hurricane	2
	Water Management	2
	Anthrax	1
	Physical or Chemical Change	1
	Displacement	1
	Earthquake	1
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	Paralytic Shellfish Poisoning	1
	Relocation	1

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	Summer	98

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	2025	16
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	2023	19
	2022	16
	2021	33
	2020	52
	2019	99
	2018	55
	2017	97
	2016	51
	2015	8
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	2010	1
	2004	1

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	April	57
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	June	31
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	October	34
	November	55
	December	30