You should address the water runoff first. I don’t see a window well. Is this a gutter downspout with a buried pipe leading away from the house? Is the joint leaking?

If there isn’t a buried pipe leading away from the house, there should be. You have to give the water a place to go.

We have a similar issue. Water runs down the hill through our back yrd. We covered the area with gravel. The water can still pass through the area, but it’s not mud.

I'd start by looking at where your water is coming from. Do you have gutters along the roofline we can see? If so, there shouldn't be too much water from the roof. Where does your downspout terminate? Is it dumping water on your muddy spot? Can you put an extension on and terminate it in a different or better spot?

Where's the gate? Is the path between the tampoline and the house? If not, you might consider drainage pipe or downspout extension that goes to a rain garden.

Protect a Precious Resource With a Rain Garden

How to Site and Size a Rain Garden for Your Landscape

How to Shape a Rain Garden and Create the Right Soil for It

Looks like you have kids and maybe pets who "trample" this area.

Another option is to put in artificial turf and border it with brick/pavers that match what you have.

I would connect the downspout to some type of "dry well" or pit and then a pipe away from the house with a pop-up. There are different ways to accomplish this, but this diagram gives you a general idea.

The downspout is connected to drainage pipe that leads away from house. The pop out is somewhere under trampoline

The window well is the huge area to the right of the muddy patch. The well is slanted so water tends to run off.

There is a walkway to the right of the trampoline that leads to the gate.

I still don’t see a window well. I don’t even see a window. This is a window well outside a basement window.

I can’t tell what that is to the right of the downspout. Looks like plastic taped down to a hard surface. Is that where the water is coming from? If so, WHY is there water there?

The house came with a large well.

not sure why. Which has this large cover

@littlebug Zone 5 Missouri, window wells can be a lot larger these days, specially if code required an egress window or they just wanted more daylight in their basement. I think OP has something like this with a fancy cover over it.

We had to have one when we did an addition in LA. Ours had a fence around the deep opening and a wall ladder for emergency exit.

Ahh. You’re right, I’ve never seen one this large.

My question remains. Why is there water there? Is the well so far out from the house that it’s not under the rain gutter? If so, I would think someone else would have had this same problem, thus the well-cover manufacturers would have come up with a solution. Perhaps a funnel effect so the egressing water could be easily managed? Or a sloped trench dug parallel with the window well, filled with gravel and able to be drained at one end?

The well does extends out past the rain gutter

So the cover is slighty slanted so that the water runs off the well cover

Can i add rocks around the area of the well.

here was my idea.

It is probably a combination of poor drainage, not enough sun and too much foot traffic. Sometimes you can't get grass to work in an area however hard you try.

We have installed artificial turf on both sides of our house, due to not enough sunlight and our dogs trampling the grass, it was a mess of patchy grass and dirt. Of course, the dogs then brought all that dirt through our light colored lanai pavers and ultimately inside the house.

First you need to divert the water not sure how to do that with the window well but it needs doing . Then dig down and roplace the dirt with more sand and gravel down about 18" then fill with the soil to grow plants That will allow the water to drain away too. Maybe if all that either can't be done or not possible then a dry river bed type landcscping might be the answer

Adding a walkway will keep the people from walking in the mud, but it's not going to solve the run-off issue, and you could even have mud on your walkway. I don't understand how that much water is running off that window. Are the eaves so shallow that they provide no protection from the rain? Maybe it's the cover over the window well that's causing the problem? Is it a solid, impermeable surface?

One more idea from me! (Somebody stop me - I’m way to involved with your issue!)

Dig down and install perforated drain pipe parellel with the cover, then route the ends to existing underground piping. Install the holes UP to collect the excess water. Here’s a picture of perforated drain pipe. Available at home improvement stores.

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I appreciate all the comments and recommendations.

The well cover is slanted so the water doesn’t collect on It. It is a solid impermeable cover.

Have you been out in the rain to see what is going on?

Without more information, my guess is the pop-up isn't working, so the drainpipe water is backing up near the house.

Good idea! I've done that when we've had gutter/downspout issues. Get a big golf umbrella and use your phone to make a video. The video helped to show the gutter guy what was happening.

We had water coming in the basement. I crawled under the porch in a downpour to see what the problem was, discovered the problem and fixed it. That was over 10 years ago and there's never been water in the basement since then and we've had some big rainstorms.

So, go out and see what's happening when it rains. Your fix might be obvious. Check your gutters, too.

Water from the window well cover is not the problem. The downspout drain doesn't appear to be the problem either.

It appears from the type of sporadic growth dormant for winter, foot traffic during winter, shade, and probably heavy foot traffic during summer, that the area is just stampeded too much.

And from what I am familiar with of their use and choices, trampolines don't serve as a good permanent anchor point to design hardscape around impingent on that exact location. You could add a bit of softcape/hardscape to make the window well less dominant, and soften the transition from patio to yard, but a design should integrate with the house and patio. In any case, larger stepping stones, closer together, with grass should be adequate with some initial curating and directions for the kids.

@littlebug Zone 5 Missouri that is not how a french drain is done nor is the answer for every perceived water issue.