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<div><b>From:</b> Hetrick, Nick <nick_hetrick@fws.gov></div><div><b>Sent:</b> Friday, February 19, 2021, 5:30:24 PM PST</div><div><b>Subject:</b> Feb 25 Webinar - Elements of the natural flow regime for consideration in management of regulated rivers </div><div><br></div>
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<span style="margin: 0px; font-size: 11pt; font-family: New Times, serif; color: black; background-color: white; background-repeat: repeat; background-attachment: scroll; background-image: none; background-size: auto; line-height: normal;">Klamath River Fish Health Enthusiasts... </span></p>
<p class="ydp8cf48e5byiv7516864573x_MsoNormal" style="margin:0in 0in 8pt;color:rgb(32, 31, 30);background-color:rgb(255, 255, 255);line-height:15.6933px;font-size:11pt;font-family:Calibri, sans-serif;">
<span style="margin: 0px; font-size: 11pt; font-family: New Times, serif; color: black; background-color: white; background-repeat: repeat; background-attachment: scroll; background-image: none; background-size: auto; line-height: normal;">We are pleased to introduce a new learning opportunity to enhance scientific and technical exchange.</span><span style="font-size:11pt;line-height:normal;font-family:New Times, serif;"> </span></p>
<p class="ydp8cf48e5byiv7516864573x_MsoNormal" style="margin:0in 0in 8pt;color:rgb(32, 31, 30);background-color:rgb(255, 255, 255);line-height:15.6933px;font-size:11pt;font-family:Calibri, sans-serif;">
<span style="font-size:11pt;line-height:normal;font-family:New Times, serif;">Event Information.
</span><b style="font-size:11pt;font-style:inherit;"><span style="font-size:11pt;font-family:New Times, serif;color:black;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-attachment:initial;line-height:normal;">Exploring
the role of the natural hydrograph in riverine ecology: </span></b><b style="font-size:11pt;font-style:inherit;"><span style="font-size:11pt;font-family:New Times, serif;color:black;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-attachment:initial;line-height:normal;">Elements
of the natural flow regime for consideration in management of regulated rivers </span></b></p>
<p class="ydp8cf48e5byiv7516864573x_MsoNormal" style="margin:0in 0in 8pt;color:rgb(32, 31, 30);background-color:rgb(255, 255, 255);line-height:15.6933px;font-size:11pt;font-family:Calibri, sans-serif;">
<span style="margin: 0px; font-size: 11pt; font-family: New Times, serif; color: black; background-color: white; background-repeat: repeat; background-attachment: scroll; background-image: none; background-size: auto; line-height: normal;">Thursday, February 25, 2021 12:00 pm</span><span style="font-size:11pt;line-height:normal;font-family:New Times, serif;"> </span><span style="font-size:11pt;line-height:normal;font-family:New Times, serif;">Pacific
Standard Time </span></p>
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<span style="margin: 0px; font-size: 11pt; font-family: New Times, serif; color: black; background-color: white; background-repeat: repeat; background-attachment: scroll; background-image: none; background-size: auto; line-height: normal;">Damon Goodman and Nicholas Som, USFWS, Arcata, CA </span></p>
<p class="ydp8cf48e5byiv7516864573x_MsoNormal" style="margin:0in 0in 8pt;color:rgb(32, 31, 30);background-color:rgb(255, 255, 255);line-height:15.6933px;font-size:11pt;font-family:Calibri, sans-serif;">
<span style="margin: 0px; padding: 0in; border-color: windowtext; border-style: none; border-width: 1pt; font-size: 11pt; font-family: New Times, serif; color: black; background-color: white; background-repeat: repeat; background-attachment: scroll; background-image: none; background-size: auto; line-height: normal;">The Webinar home page is here:<u> </u></span><span style="margin:0px;font-size:12pt;font-family:New serif;"><a href="https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdoilearn2.webex.com%2Fdoilearn2%2Fonstage%2Fg.php%3FPRID%3Dfcc6dab61533109261fb56da8e34c178&data=04%7C01%7Cnick_hetrick%40fws.gov%7C008b0992df524162d75108d8d44ec1f8%7C0693b5ba4b184d7b9341f32f400a5494%7C0%7C0%7C637492782008746895%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=tOheZ%2FJ34t2Ug5u0q7BbgzCHPxY5GvxhfpzkoGzNDbw%3D&reserved=0" title="Original URL: https://doilearn2.webex.com/doilearn2/onstage/g.php?PRID=fcc6dab61533109261fb56da8e34c178. Click or tap if you trust this link." style="margin:0px;" rel="nofollow" target="_blank"><span style="margin: 0px; padding: 0in; border-color: windowtext; border-style: none; border-width: 1pt; background-color: white; background-repeat: repeat; background-attachment: scroll; background-image: none; background-size: auto;"><span style="margin:0px;font-size:11pt;line-height:normal;font-family:New Times, serif;">FWCO
Webinar Series Link</span></span></a><span style="margin: 0px; padding: 0in; border-color: windowtext; border-style: none; border-width: 1pt; color: black; background-color: white; background-repeat: repeat; background-attachment: scroll; background-image: none; background-size: auto;"><span style="margin:0px;font-size:11pt;line-height:normal;font-family:New Times, serif;">. </span><span style="margin:0px;"><span style="margin:0px;font-size:11pt;line-height:normal;font-family:New Times, serif;"> </span></span><span style="margin:0px;font-size:11pt;line-height:normal;font-family:New Times, serif;">On
this webpage, individuals can register to attend talks and view archived presentations from this webinar series.</span></span><span style="margin: 0px; padding: 0in; border-color: windowtext; border-style: none; border-width: 1pt; color: black; background-color: white; background-repeat: repeat; background-attachment: scroll; background-image: none; background-size: auto; font-size: 11pt; line-height: normal; font-family: New Times, serif;"> </span></span></p>
<p class="ydp8cf48e5byiv7516864573x_MsoNormal" style="margin:0in 0in 8pt;color:rgb(32, 31, 30);background-color:rgb(255, 255, 255);line-height:15.6933px;font-size:11pt;font-family:Calibri, sans-serif;">
<b><span style="margin: 0px; font-size: 11pt; font-family: New Times, serif; color: black; background-color: white; background-repeat: repeat; background-attachment: scroll; background-image: none; background-size: auto; line-height: normal;">Abstract.</span><span style="margin: 0px; font-size: 12pt; font-family: New serif; color: black; background-color: white; background-repeat: repeat; background-attachment: scroll; background-image: none; background-size: auto;"><span style="font-size:11pt;line-height:normal;font-family:New Times, serif;"> </span></span></b><span style="margin: 0px; font-size: 11pt; font-family: New Times, serif; color: black; background-color: white; background-repeat: repeat; background-attachment: scroll; background-image: none; background-size: auto; line-height: normal;">Flow
regimes are a key driver in the ecology of riverine systems world-wide and directly influence the habitats and behaviors of aquatic species. Streamflows provide biological cues and a template for habitats of aquatic organisms by influencing the wetted channel
extent, the distribution of water depths and velocities and the interaction with substrate, vegetation and the adjacent bank. The distribution and spatial arrangement of hydraulic variables are dynamic and change with streamflow, a process inherent to free-flowing
rivers that is, at times, overlooked when evaluating the effects of managed flow regimes on habitats available to aquatic organisms. This is exemplified by the increase in availability and spatial variation in Chinook Salmon spawning habitats associated with
naturally ascending fall baseflows. We found this component of the natural hydrograph to provide a benefit across a range of channel forms and hydrologic regimes. Naturally ascending baseflows also provide ecological benefits during springtime and have been
associated with providing additional habitat that temporally overlaps with fry emergence and times critical for development of juvenile salmonids. Streamflow variation induced by winter and spring storm events has also been associated with benefits to ecological
processes. Juvenile Pacific Lamprey have a punctuated seaward migration with 90% of individuals outmigrating in a series of large schools. We found strong evidence these migration clusters are associated with rain events, a surrogate for streamflow, with over
90% of emigrants caught during an event and the two subsequent days. The importance of these peak streamflow events is also associated with fish disease management where peak streamflows have been associated with sediment transport, and the subsequent reduction
in disease mortality risk for salmonids. These examples provide support for the application of new management tools to support species conservation, such as real-time streamflow management, that integrate elements of the natural flow regime into dam release
strategies. </span></p>
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<div style="font-family:Calibri, Arial, Helvetica, sans-serif;font-size:12pt;color:rgb(0,0,0);">
<span style="background-color:rgb(255,255,255);"><i>Nicholas J. Hetrick</i></span></div>
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<span style="background-color:rgb(255,255,255);"></span><span style="font-family:calibri, arial, helvetica, sans-serif;font-size:12pt;color:rgb(0,0,0);background-color:rgb(255,255,255);">Fish & Aquatic Conservation Program Lead</span></div>
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<span style="background-color:rgb(255,255,255);">Arcata Fish & Wildlife Office, USFWS</span></div>
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<span style="color:rgb(0,0,0);font-family:calibri, arial, helvetica, sans-serif;font-size:12pt;">Office (707) 822-7201</span></div>
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<span style="font-family:calibri, arial, helvetica, sans-serif;font-size:12pt;color:rgb(0,0,0);background-color:rgb(255,255,255);"></span><span style="font-family:calibri, arial, helvetica, sans-serif;font-size:12pt;color:rgb(0,0,0);background-color:rgb(255,255,255);">Cell
(707) 267-5856</span></div>
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<span style="font-family:calibri, arial, helvetica, sans-serif;font-size:12pt;color:rgb(0,0,0);background-color:rgb(255,255,255);">(due to the COVID-19 pandemic, I am teleworking and can be reached by cell or email) </span></div>
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