Olympic Flyfish Newsletter Vol 4, Issue 4 April 2004.

Club News For April


The March meeting welcomed new member Bill Vincent, who was a recent member of our fly tying classes. There were a number of guests in attendance as well: Grant Martin, Gill Nyerges, Jim Hagy, Dave Cole, Jay Hunter and Mike Alunni. Gill and Jay were both guest speakers for the March meeting.

Jay Hunter gave an informative presentation on the new WDFW program Eyes In the Woods and there newest effort Streamwatch. Streamwatch is a program that allows sport clubs the opportunity to take a leadership role in protecting aquatic resources in local areas. You can learn more about the Eyes In The Woods program at fish@eyesinthewoods.org.

Gill Nyerges gave an informative presentation on the history, evolution and fishing a number of lakes in Eastern Washington. Gill is the creator of the infamous Nyerges Nymph fly.


The Club has a number of outings and activities planned for the month of April. The first is an outing to Trophy Lake in Bremerton. The outing is on Friday, April 9th and will cost $50.00. The fee includes lunch. The Club has had a number of outings to Trophy Lake in the past and the fishing has always been good.

Club spring picnic at "A Country Location", Saturday, April 24, fishing $10 hr, reserve fishing time at April meeting.  Cash pot for biggest fish.  Casting instruction and casting competition by FFF certified instructor.  Club provides burgers and hot dogs.  Bring a pot luck dish. Family members welcome.

Big Twin Lake in Winthrop is also on the calendar for April. The outing will be hosted by Dan Reynolds and will go from April 30th to May 2nd. You can camp on the lake or stay at one of the nearby resorts. Bring your boat or float tube or pontoon boat. You can also fish from the shore.


The Tightline

Topic Index For April

 Club News

 Other News

 Guest Speaker

 Article of Interest


Club Meetings :

2nd Wednesday of every month @


South County

Senior Center

220 Railroad Ave.

Edmonds, WA

Social Hour 6:00PM

Dinner 7:00 PM



Club Board Meetings :

4th Wednesday of every month @



196th Avenue

Lynwood, WA

Dinner 7:00 PM

Other News

We received the following announcement from LeeAnne Beres, Associate Director of Save Our Wild Salmon.

SALMON, DAMS, AND WE THE PEOPLE, An evening with David James Duncan April 29, 2004  7:30 pm, Town Hall Eighth and Seneca, Seattle. Doors open at 6:00 pm for book signing, silent auction, and light refreshments Special appearance by Yvon Chouinard, owner/founder of Patagonia. David James Duncan is the author of The River Why and The Brothers K, and a collection of memoir and short stories, River Teeth. His most recent book, My Story as Told by Water, won the Western States Book Award and was nominated for the 2001 National Book Award.  Duncan has read and lectured all over the United States on wilderness, the writing life, the non-monastic contemplative life, the fly fishing life, and nonreligious literature of faith. Tickets are $10, and are available at: Elliott Bay Book Company (206) 624-6600, Patagonia (206) 622-9700, or at the door.  Event sponsored by Patagonia.  Proceeds from ticket sales and silent auction will benefit Save Our Wild Salmon (www.wildsalmon.org). Silent auction featuring Patagonia products, Outdoor Odysseys Sea Kayaking Tours, fly rod from Sage, Outcast Lake Cat 7000 Pontoon Boat from Kauffman's Streamborn, fishing trips, and much more!


The Club would like to welcome back our guest speaker for April, Phil Rowley. As you may remember, Phil has been a quest speaker a number of times over the past few years.

Phil Rowley has been fly fishing stillwaters for over 15 years. His first book, Fly Patterns for Stillwaters is testament to his love of flat-water fly-fishing. Along with other B.C. fly fishers Phil was a contributing author to the recently released, Fly Fishing British Columbia.

His pursuit of fish on the fly has taken him throughout the Pacific Northwest and as far south as Mexico. Based upon his experiences Phil contributes to a number of magazines including, American Angler, Fly Tyer, Fly Fisherman, Northwest Fly Fishing, Fly Fishing, Fly Tying and Fishing Journal and B.C. Outdoors.

Phil is a regular contributor to bcadventures.com including his own column, Phil's Fly Box. An active member of the Osprey Fly Fishers Phil is a former director with the British Columbia Federation of Fly Fishers.

Throughout the year Phil can be seen performing at sportsman's shows, fly-fishing and tying seminars throughout western Canada and Washington State.


Reminder: New Fishing License


Remember to purchase your new fishing license for the upcoming season. The season runs from April 1, 2004 to March 31, 2005. The cost of the license will vary depending upon what type of fishing you will be doing. There is a link to the WDFW website on our website if you are interested in learning more about the cost of the license. You can now purchase your licensee on line. The link below will take you to the WDFW website which will explain the process. (you may have to copy and paste the following ling into your browser).





What Is Lake Turnover?

It happens in spring and fall, and anglers know it affects the location of sport fishes.



Tell someone that the lake you are fishing has recently turned over and most likely that will produce some strange looks and perhaps an image of a lake flipflopping in the dark of night. But turnover is what happens to lake water in the spring and fall. Anglers recognize the effect if not the actual process.


Lake turnover is caused principally by seasonal temperature changes of a lake's surface water. Turnover occurs in the spring when water begins to warm and again in the fall when water cools.


Water circulates and stratifies in a lake throughout the year. Since temperature and circulation regulate the amount of oxygen that water can hold in solution, water temperatures and oxygen levels often dictate where fish are found in a lake. Anglers who adapt their angling to the temperatures and oxygen levels preferred by sport fishes can improve their success.

In winter, water temperatures range from about 39 degrees Fahrenheit at the bottom. Water is densest and heaviest at 39 degrees; colder and warmer waters are lighter. Colder water holds more oxygen in solution. Consequently, oxygen levels usually are high during cool weather, especially in early winter.


The exceptions are shallow lakes or lakes choked with weeds, which can develop oxygen problems during prolonged ice cover. Ice cover does not allow lake water to circulate and pick up oxygen from the atmosphere at the surface. In addition, snow-covered ice prevents sunlight from entering the water, and this slows oxygen production by aquatic plants. Under these conditions, oxygen levels can become depressed due to respiration by aquatic animals and plants, as well as from the decomposition of organic materials such as dead plants. A fish-kill will result if oxygen levels become excessively low. During winter, most fish tend to seek the warmer water near the bottom.


When surface water reaches 39 degrees in spring, it becomes heavier than the water immediately below it and therefore sinks. The downward movement of surface water forces water in the deeper parts of the lake upward. The resulting circulation of water is called spring turnover. Spring winds also help promote water circulation.


Spring turnover may last several weeks if the weather is cool and windy, or a matter of days if the weather suddenly turns hot and calm. When the water reaches about 50 degrees, it begins to stratify or develop temperature layers.



No circulation of water during ice cover. Oxygen levels are usually. high. However, during ice cover, oxygen levels in shallow lakes can become very low. Fish are usually located near the bottom in deep water.



Spring turnover - lake water begins to circulate when surface water reaches 39F. Oxygen levels are high from surface to bottom. Fish are located from shallow to deep water, especially around structures.




Epilimnion - circulating warm water. Oxygen levels are moderate to high. Fish often are confined to the zone which may be up to 20 feet deep.

Thermocline - zone of rapid temperature and oxygen change. Fish will select this zone if oxygen is present.

Hypolimnion - cold, non-circulating water. Oxygen levels are low or oxygen is absent. Fish cannot inhabit this zone for any length of time due to low oxygen levels.



Fall turnover - lake water begins to circulate when surtaet water reaches about 50F. Oxygen levels are high from surface to bottom. Fish are located from shallow to deep water, especially around structures.



During spring turnover, oxygen is continually absorbed at the surface as the water circulates. This, plus the fact that the water is cold, results in high oxygen levels. Theoretically, fish can inhabit all areas of the lake, but they tend to lie near the bottom and around submerged structures such as old stream channels, trees and brush. Since most Missouri sport fishes spawn during the spring in relatively shallow water, fishing these waters can be productive.


Water temperature continues to rise through spring into summer, and distinct temperature layers form - a phenomenon called "thermal stratification". Surface water, which is lighter because it's warmer, eventually forms a layer above a zone of colder water. This layer of warm water, called the epilimnion, circulates primarily due to wind at the surface. In deep, clear lakes, this layer may extend 20 feet down.


Since water in the epilimnion continually comes into contact with the surface, it continues to heat up as air temperature rises. This upper layer also tends to have higher oxygen levels due to aeration at the surface and also because oxygen is produced by aquatic plants which live in this zone.


The hypolimnion is the cold, bottom layer of water. In most Missouri lakes, this layer loses most, if not all of its oxygen due to the decomposition of organic materials and the consumption of oxygen by aquatic animals. The density barrier which forms between the cold and warm layers prevents the water in the hypolimnion from circulating to the surface. Little or no sunlight penetrates to the hypolimnion, so oxygen-producing plants cannot survive in this zone. As summer progresses, oxygen levels become depleted, so fish and most other aquatic animals must move to shallower waters which contain adequate oxygen.


Between the warm, upper water and cold, bottom water, a narrow layer called the thermocline or metalimnion forms. Water temperature and oxygen within this layer change dramatically from its upper to its lower levels. During the hot summer months, many sport fishes prefer the cool water in the thermocline, but they may not be able to live in this zone if oxygen levels are low.


When surface water reaches about 50 degrees Fahrenheit in the fall, it becomes as dense as deeper water and sinks. The downward movement of surface water forces deeper water upward. As happens in spring, the water begins to circulate, and this is called fall turnover. Circulation is also enhanced by fall winds. Since the circulating water continually comes into contact with the surface, oxygen levels become high throughout the lake. The onset of fall turnover sometimes produces a sulfurous or rotten-egg odor. It comes from sulfur dioxide gas produced by decomposition during the summer and trapped within the hypolimnion. When the deep water reaches the surface during fall turnover, the sulfur dioxide is released into the atmosphere.


As in spring, fish can be found throughout the lake. Sport fishes will tend to gather near the bottom and around submerged structures.

Some degree of water circulation can continue until ice covers the lake. When ice forms, wind can no longer provide the driving force to circulate the water. Minor stratification then sets in, with the dense, 39-degree water at the bottom and water as cold as 32 degrees at the surface.


Any lake will have similar turnover and stratification patterns from year to year, assuming weather conditions are near normal. Also, lakes which have similar depths, fertility and exposures to prevailing winds will tend to have similar turnover and stratification patterns. All lakes turn over, but not all of them stratify strongly. Some shallow lakes contain warm water from the surface to the bottom, and even deep lakes do not significantly stratify if they are exposed to strong winds wich can continually circulate the water.

Probably the most accurate way to determine lake turnover and stratification patterns throughout the year is to measure temperature and oxygen profiles from top to bottom. Although electronic temperature and oxygen meters are becoming more popular, their high cost keep them on the wish lists of most anglers. However, if a fishing friend has such equipment, have him/her determine seasonal temperature and oxygen profiles on your favorite lakes. If the lakes you fish have good water quality; water temperature, dissolved oxygen and submerged structures will be the three most important factors affecting the location of sport fishes. Your ability to find good structures in waters which contain preferred temperatures and adequate oxygen will improve your odds of catching fish.


Document ID: --
Content revision: 1997-07-03


April fishing and hunting opportunities good reason to renew licenses early

If previous years are any indication, more than 300,000 Washingtonians will kick off the 2004-05 fishing season with the lowland lakes opener, set for April 24 this year. But why wait until then to purchase a new license? State fishing and hunting licenses expire at midnight March 31, and there are plenty of reasons to have a new one in hand in the weeks ahead.

In the Columbia Basin, for example, more than 30 lakes will open for trout fishing April 1, offering a welcome combination of big fish and sunny weather. Meanwhile, catch rates for spring chinook continue to climb on the lower Columbia River, and anglers can still take advantage of four weeks of prime steelhead fishing on several north coast rivers open through the end of April. In addition, the Washington Department of Fish and Wildlife (WDFW) is planning a morning razor clam dig April 21-24, provided tests show the clams are safe to eat.

Hunters have good reason to renew their licenses early, too. A new youth spring wild turkey season is scheduled April 10-11 in a number of areas prior to the general spring turkey hunt that gets under way April 15.

"We encourage people to renew their fish and hunting licenses early, so they can take advantage of all the great outdoor recreation opportunities available in this state," said Frank Hawley, WDFW licensing manager. "The cost for a seasonal license is the same whether you buy it in April or July, and think of all the terrific opportunities available between now and then."

Actually, Hawley said, people can save $3 on several types of fishing licenses - shellfish, combination and two-day temporary - this year if they buy them before May 18. That's because a new license surcharge approved by the state Legislature to support improvements in sampling, monitoring and managing the Dungeness crab fishery won't take effect until then.


Better still, fishers and hunters can - for the first time - buy a chance to win a lifetime of free fishing and hunting privileges. Two lifetime fishing and hunting license packages will be drawn June 1 from applications purchased up until midnight May 31. Two more will be drawn Sept. 30, Dec. 30 and again March 31, 2005 from among applications purchased between Jan. 1 and the time of those drawings. Applications are $6.50 for Washington residents, $12.50 for non-residents, and can be purchased in unlimited numbers on WDFW's Internet website (http://fishhunt.dfw.wa.gov/), by telephone (1-866-246-9453), or at any of more than 500 license dealers across the state.

Also available for the first time this year, new "watchable wildlife" decals will provide Washington's non-hunting and non-fishing wildlife enthusiasts a way to secure the vehicle use permit required to use WDFW lands and also contribute to WDFW's development of wildlife viewing opportunities. The decal package is $30 and includes a vehicle use permit along with a hanger to transfer the permit between vehicles, a copy of "Washington Wildlife Viewing Guide" and other wildlife information materials.


Due to budget reductions adopted last year by the state Legislature, licenses and decals are no longer sold over-the-counter at any of the WDFW offices around the state. Instead, all sales have been shifted to the license dealers, website and toll-free phone line noted above. Right now, WDFW fish hatchery crews are busily stocking nearly five million trout in lakes across the state for opening day.


North Central Washington:

Fishing: More than 30 lakes in this region open to fishing April 1, providing what WDFW regional fish program manager Joe Foster called high quality "trouting" (as in rainbow trout). Most are in Grant and Adams counties on the Columbia National Wildlife Refuge and on state land east and south of Potholes Reservoir. Ranging from Bobcat Creek Ponds to Widgeon Lake, they are all listed in the fishing pamphlet under the "Eastside Lakes/Special Rules" section. Much acclaimed Dry Falls Lake in Sun Lakes State Park south of Coulee City also opens April 1. "Trout in this lake are absolute monsters," said Foster. "Selective gear is the law, and it's embraced heartily by hordes of rain-drenched westside fly flingers who love to bob about on this jewel in the eastside sun." Foster also notes that Lenore Lake is popping again with giant Lahontan cutthroat trout for catch-and-release, selective gear fishing. "Most action is at the north end," Foster said, "but you'll need a reservation for standing room there. Everyone should have protective head gear and have well-honed ducking skills. " Shoreline anywhere along the east side of the lake is also worth exploring. WDFW fish biologist Patrick Verhey reports the water now in the canal systems throughout the Columbia Basin are triggering walleye in local reservoirs like Potholes and Moses Lake to start feeding and biting more aggressively. Steelheading on the Okanogan and Similkameen rivers is closed as of March 31. The rivers had been open by emergency regulation to hatchery steelhead fishing since last fall because the run was large enough and impacts to wild steelhead listed under the federal Endangered Species Act were low enough. The Okanogan River remains open to game fish other than trout and steelhead from the mouth to the highway bridge at Malott. The whitefish season on the Similkameen River also closed March 31 and no other fishing is allowed until June.


(for a view of the complete article go to http://wdfw.wa.gov/do/weekendr/weekendr.htm)