Skip to Main Content View Text-Only

The City of Portland, Oregon

Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

1120 SW 5th Ave, Suite 613, Portland, OR 97204

More Contact Info

Frog eggs for Valentine’s Day?


frog egg mass in Johnson Creek  tree frog eggs closeup 

rough skinned newt under water

Nothing says “love” to scientists like amphibian eggs in Portland’s waterways. 

These pictures show egg masses for red-legged frogs (left) and Pacific tree frog (right), as well as a rough-skinned newt underwater.

Environmental Services scientists found these while monitoring for amphibian populations at Johnson Creek restoration sites

We monitor amphibians, like native salamanders, newts and frogs, to track the success of restoration projects and overall conditions in local streams.  Amphibians are an indicator of water quality conditions – they are very sensitive to pollution. 



Add a Comment


Kristan Burkert

February 17, 2015 at 9:08 AM

I like hearing the "why" for this kind of monitoring. Though I'd say chocolate, I'm glad those scientists had a nice Valentine's Day gift, too.


Angel York

April 1, 2015 at 5:35 PM

Here's why they do this kind of monitoring: "Amphibians are an indicator of water quality conditions – they are very sensitive to pollution."


Tara Raajput

February 9, 2022 at 12:14 AM

Hi, my name is Tara Raajput I am a naturally sexy woman with a gamesome personality and amazing twerking chops! I'm a Cypriot summer girl as you can see in my filmland, I can keep a good discussion & give you the stylish experience ever! Sexy curvy body with Juicy bum & oversights long black hair and sexy big natural lips! I'm a Size UK12 my height is 5'7 and my bone size is DD-E 100 real filmland & videotape! <a href="">Russian Escorts in Mahipalpur</a> | <a href="">Delhi Escorts</a> |


Ritika Rani

May 17, 2022 at 4:08 AM

Ritika Rani Mumbai escorts offer elite call girls and female Escort services at a cheap and affordable rate.

Mumbai Escorts Services:
<a href="">Mumbai Escorts</a> | <a href="">Mumbai Call Girls</a> | <a href="">Mumbai Call Girls Photo</a> | <a href="">Mumbai Cheap Call Girls</a> | <a href="">Mumbai Escorts Blog</a> | <a href="">Mumbai Call Girls Phone Number</a>

Please review our Code of Conduct rules before posting a comment to this site.
Report Abuse (Please include the specific topic and comment for the fastest response/resolution.)

Post a Comment
E-mail (visible to admins only)
 Remember Info Yes   No
Spam Prevention In the Pacific Northwest, what state is Portland in?