Tag Archives: Farmington River water level

Farmington River flows and temp update 9/6/21

I wish I had all good news for you, but once again we will be experiencing challenging conditions on the West Branch. Let’s start with flows. The Labor Day weekend party is over as they’ve jacked up the dam release to 1,100cfs:

And we’re back to water temperature rearing its ugly head. Look how the release temp spiked with the increased flow:

In a word, ugh. There’s nothing to be done about the flow increase, as the MDC needs to maintain a certain safe reservoir level in case of hurricanes. But the news isn’t all bad. Torrey Collins says the Still River is actually a cooling influence, and the long range forecast calls for overnight lows mostly in the upper 50s, so that’s going to help. Who knows when the DEEP will stock, or if they’ll even do a Survivor Strain broodstock gathering. I’ll do my best to keep you posted. In the meantime, I’m heading for the salt.

Farmington River Conditions: And the hits just keep on coming!

What a disaster summer this has been for major river fishing in Connecticut. Pity the poor Farmington: too much rain, too much flow, too much warm water. Its current story is best told by these USGS Waterdata graphs.

They’ve jacked up the flow again. At this rate, we may not have any stratification of reservoir water for weeks…or perhaps months.
Water coming out of the dam is already at a trout-unfriendly — and that’s sugarcoating it — temperature. Who knows what heated horrors exist downstream below New Hartford? Nature will find a way for some trout. Many will not be so lucky.

I regret being the messenger of such dire tidings, but it is what it is and there’s nothing we can do about it. Suffice to say, please don’t fish for trout. And hope those tropical systems out there right now stay away from Connecticut.

In case you’re wondering why the water is so warm, this article by yours truly may help.

Why is the Farmington River so warm? Or: when tailwaters don’t work

I’ve been getting a lot of questions about Farmington River water temps. The basic outline is, “I thought the Farmington is a tailwater. Why is the river so warm?” The answer is pretty simple.

In case you don’t know, a tailwater is a river with a dam release. The flow of the Farmington River West Branch is controlled by water that comes out of gates from the base of a reservoir dam (Colebrook Reservoir and Hogback Dam). If you’ve ever gone swimming in a pond or lake, you know that the water is warmer near the surface and colder near the bottom. This is called thermal stratification. In a larger reservoir, you have three different thermal layers: the epilimnion (the warmer upper layer; the metalimnion (or thermocline, the middle layer); and the hypolimnion, the coldest bottom layer. But I said this was simple, and there I go throwing all kinds of hifalutin hydro-science terms at you.

Ideally, there’s a happy medium of bottom release flows on a tailwater: cold water is never released in amounts that cannot be quickly replenished. But there are two situations that screw everything up.

The first is severe drought. Water that flows into the Colebrook Reservoir is reduced to a warm trickle. The volume of the reservoir shrinks from evaporation. The temperature of the water rises, especially if it’s hot, which decreases thermal stratification. As a result, what comes out of the bottom of the dam is warmer than ideal. (By agreement with the CT DEEP, the MDC must maintain a minimum release of 50cfs.) Because the flow is so low, water downstream warms quickly, trout get stressed, and it’s a bad scene all around. (This was the case in 2016. It was so bad that the DEEP took the unprecedented step of declaring thermal refuges on the Farmington.)

But that’s not what happened this year. This year, we had too much water. All that rainfall in July meant that the MDC needed to bleed water, and lots of it — so much, in fact, that it wiped out any meaningful thermal stratification in the reservoir. They’re still running such a high volume of water that there’s no chance for the stratification to re-establish — at least not in the heat of August. So that’s why at noon today the water was coming out of the dam at a very trout-unfriendly 69 degrees.

Eventually, it will get better. But right now, the best thing you can do for Farmington River trout is play the waiting game.

Taken this winter when the water was very, very, cold. Hang in there, buddy!

Farmington River Sampling/Survivor Strain Broodstock Collection This Week

As I write this, the Farmington is chugging along at a low 120cfs or so within the permanent TMA. Cooler-than-normal temperatures have been a blessing during these extended low flows.

The MDC will be cutting the flow to double digits on Tuesday August 27-Thursday August 29 so that DEEP crews can sample the Farmington River and collect broodstock for the Survivor Strain program. (Here’s another nifty article on the Survivor Strain program, complete with elastomer color codes.) They will be focusing their attention on some popular pools and runs within the permanent TMA. You can still fish the river — you are merely asked to yield to the crews as they work. Better still, volunteer to work on  the crew — there’s no better way to discovery where the lunkers live! You can contact the DEEP here.

She’s a big mamma jamma. Just as fine as she can be. Not a Survivor Strain (note intact adipose) but a fine example of the potential of the Farmington River.

DCIM100GOPROG0013068.

 

Farmington River sampling, stocking, and spawning, or: we really, really need rain

Yesterday’s rain was nice for the garden, but it was statistically insignificant for the Farmington River. Our favorite trout water continues to be battered by low flows (60cfs out of the dam as of this morning) and unseasonably warm temperatures. If you decide to fish, please use common sense.

To the trout: DEEP crews sampled the river last week. They extracted 99 browns from the permanent TMA for Farmington River Survivor Strain broodstock. These aren’t all necessarily big, wild fish — the goal is genetic elasticity, so there is a mix of sizes covering both wild and holdover fish. I spoke with Fisheries Biologist Neal Hagstrom today, who said there were “a fair number of wild fish. The holdover Survivors didn’t look as plump as I would have liked, but not as bad as I had feared.”

In past years, the post-spawn Survivor Strain broodstock have been reconditioned, then returned to the river. But Neal told me there is some discussion about keeping those fish in-house for genetic insurance until flows become more stable. (If I may editorialize, that sounds like a damn good idea.) There is also concern that the current low flows will inhibit natural spawning this fall. Likewise, a spike in flows would be bad, as it might cause the fish to create redds in unsustainable locations. How this all will play out, only Mother Nature knows.

Once water temperatures enter more trout-friendly strata, the DEEP will restock the lower river with yearling trout (7″-9″). “Hopefully, this will help rebuild the lower river trout population,” says Neal.

Kudos to the DEEP for everything they do for the trout and the river. 

Likewise to the MDC, who have done everything they can to maintain flows. Let’s not forget that the MDC’s first priority is to supply potable water to the community. That we still have cold water and healthy trout in an officially severe drought is a blessing.

So, go out and do a rain dance when no one’s looking, and remember — it’s only stupid if it doesn’t work.

Hang in there, dude. Help is on the way.

Brown release

 

 

Farmington River Report: Bad news if you like water (or if you’re a Light Cahill)

Not for the world would I aspire to be Mr. Doom and Gloom. So we’ll start with some good news. Up Riverton way the water is still plenty cold. I did a couple hours of dry fly last night, and while the action was not as strong as what I experienced last week, there were still some active feeders to cast to. Once again, small rusty and creamy spinners (size 22) attracted the most attention. At one point, two(!) cedar waxwings alighted on my rod.

The bad news was that the rises were sporadic at best — and the water is the lowest I’ve ever seen. There was a decent enough hatch of Light Cahills (sz 16) after 7:30, but they never got more that ten feet off the water. The waxwings were ruthlessly efficient in their work, and picked off every single mayfly I saw emerge.

Good luck if you’re heading out, and watch those water temps as we get into some warmer weather.

Could we get a little more water here, please?

Jack Torrance

Down goes Frazier! or: Cutting the dam release to 60cfs

That’s right, campers. The Farmington River was dropped like Smokin’ Joe after a thunderous George Foreman right. 60cfs. Read it and weep.

The only (for now) saving graces are that it’s not piss stinking hot and the release from the bottom is still plenty cold. It’s supposed to heat wave again this weekend. Happy happy joy joy.

Smallmouth on the Connecticut or the Hous, anyone?

Remember her?

IMGP1729

“We can’t catch a break.”

This just in from Farmington River Anglers Association president Drew Butler: “Sorry guys, but I just received word they are bumping the release from the dam back up to 500 from the current 330 cfs level. Combined with the slowly dropping Still River the total flows through the upper TMA will be back over 800 again. We can’t catch a break lately. I was kayaking on Hogsback Reservoir on Sat and you would not believe the amount of water coming directly into the reservoir from the surrounding hills.”

(This is where we join in a rather large collective sigh.)