Search - Local Environmental Observer (LEO) Network

Explore Posts
- Most Recent
- Near You
- At your Latitude
- Advanced Search
- Observations From Members
- Posts by Topic
- Weather
- Ocean / Sea
- Plants / Kelp
- Human Health
- Buildings
- More Topics
- Posts by Date
- Past Week
- Past Month
- Past Year
- Posts by Season
- Winter
- Spring
- Summer
- Fall
Submit a Post
Directory
Library
About

Sign In / Join
My LEO
- My LEO
- My Maps
- My Community
- Messages
- Editor
- Sign Out
English
- English
- Español
- Français
- Deutsch
- Русский
- Norsk
- Svenska
- Suomi
- Dansk
- Yup'ik
- Portuguese
- Монгол хэл
- العربية
- Davvisámegiella
- Skolt Sámi
- Íslenska
- Українська
- हिंदी
- اُردُو
- Türkçe

Local Environmental Observer (LEO) Network

Explore Posts

At your Latitude

Advanced Search

Observations From Members

Submit a Post

Submit your Own Event Observation

Have you observed an unusual environmental or climate event in your area? Please share it with us.

Submit an Event Article

Has your local news media reported on an unusual environmental or climate event? Please let us know.

Submit a Background Article

Please share background (non-event) articles with us.

Directory

About

Funding & Support

LEO in the News & Research

My LEO

List Map Stats

Thumbnails
Slideshow
Timeline
Download Search Results
Embed
Search Engine Help

All Topics
Or limit to:
Weather
Transportation
Buildings
Land
Extreme Precipitation
Other Topics...

Any Date
Or limit to:
Past Week
Past Month
Past Year
More Options...

Entire World
Or limit to:
A country of countries
A region
A community or location
A latitude band
A bounding box
A polygon

All Posts
Or limit to:
All Event Posts
Observations from Members
Articles in News Media
Background Articles

Invasive Elodea in Chena Slough

26 Oct 2023

North Pole, Alaska, United States

Invasive elodea decade history in the Chena slough with mitigation and persistent infestation.

LEO Network

© Mapbox © OpenStreetMap

Embed Code

Paste this code into a web page to embed these search results on a map.

Share Search Results

Enter email addresses separated by a comma

Save Search Results

Name Your Search

Receive email notification?

Filters

Topic

	Safety	848
	Weather	322
	Transportation	289
	Buildings	257
	Land	190
	Extreme Precipitation	189
	Human Health	174
	Flooding / Draining	138
	Ice / Snow Change	132
	Land Mammals	131
	Surface Waters / Wetlands	131
	Extreme Wind	120
	Landslide / Avalanche	105
	Extreme Temperature	92
	Displacement	90
	Unusual Animal Behavior	81
	Energy	74
	Ocean / Sea	73
	Sports / Recreation	72
	Fire	61
	Pets	56
	Economic Impact	54
	Sanitation	52
	Unusual Range / Sighting	49
	Water Management	45
	Erosion	42
	Deformity / Disease / Injury	41
	Death / Die-off / Decline	37
	Marine Mammals	37
	Air Quality	36
	Food Security	36
	Injury	36
	Birds	35
	One Health	35
	Rain on Snow	35
	Permafrost Change	34
	Storm Surge	34
	Pathogen	32
	Seasonal Timing	29
	Zoonotic Flu	29
	Communication	27
	Cultural Impact	27
	Cyclone / Hurricane	24
	Plants / Kelp	23
	Water Security	22
	Unusual Size / Abundance	21
	Mental Health	21
	Air	18
	Atmosphere	18
	Pollution	18
	Algal Bloom	17
	Livestock	17
	TOURISM	16
	Earthquake	15
	Fish	15
	Glacier Change	15
	Acute Illness	14
	Fisheries	14
	Insects	13
	Invertebrates	13
	Eruption	13
	Agriculture	12
	Rabies	12
	Debris / Trash	11
	Groundwater	11
	Sinkhole / Crater	11
	Relocation	9
	Thunderstorm	9
	Parasite	8
	Forestry	7
	Infestation	7
	Sea/Land Level Change	7
	Tsunami	6
	Arachnids	5
	Chronic Illness	5
	Microbes	5
	Harvest Change	4
	Radiation	4
	Conflict	3
	Burial Site	2
	Drought	2
	Paralytic Shellfish Poisoning	2
	Boreal Pox	1
	Anthrax	1
	Aquaculture	1
	Physical or Chemical Change	1
	Amphibians	1
	Fungi	1
	Reptiles	1
	Unusual Variation	1

Show observations with

of the selected

Countries

	United States	377
	Canada	98
	Russia	40
	Norway	28
	Iceland	26
	Finland	13
	United Kingdom	13
	Sweden	6
	India	4
	Japan	4
	Greenland	3
	Mexico	3
	South Korea	3
	Spain	3
	Svalbard and Jan Mayen	3
	Australia	2
	China	2
	France	2
	Greece	2
	Honduras	2
	Indonesia	2
	Kenya	2
	Mongolia	2
	Philippines	2
	Poland	2
	Barbados	1
	Belgium	1
	Brazil	1
	Chile	1
	Costa Rica	1
	Cuba	1
	Cyprus	1
	Faroe Islands	1
	Germany	1
	Guatemala	1
	Ireland	1
	Kazakhstan	1
	Libya	1
	Morocco	1
	Nepal	1
	Netherlands	1
	New Zealand	1
	Pakistan	1
	Papua New Guinea	1
	Saint Lucia	1
	Saint Vincent and the Grenadines	1
	Switzerland	1
	Taiwan	1
	Thailand	1
	Tonga	1
	Ukraine	1

Date Range

From		To
	-

Season

	Winter	203
	Summer	201
	Spring	168
	Fall	141

Year

	2025	59
	2024	169
	2023	184
	2022	92
	2021	119
	2020	156
	2019	6
	2018	2
	2017	1
	2015	1
	2014	1
	2012	1
	2007	1

Month

	January	91
	February	60
	March	71
	April	58
	May	59
	June	68
	July	77
	August	73
	September	44
	October	49
	November	69
	December	73