Runoff & harvesting
Rain barrels, rain chains and downspout drainage in Austin
Austin homeowners like to catch their rain and like the look of a chain instead of a downspout. Both work here if they're set up for a three-inch-an-hour storm and not a drizzle. We plumb barrels with real overflows, size chains for the run they serve, and bury drains where the lot needs it.
Why the downspout end matters more in Austin
In a lot of cities the gutter is the job and the downspout just ends at a splash block. Here the ground decides. West of MoPac a downspout dumping onto a few inches of soil over limestone cuts a gully in one season and undermines whatever is downhill of it. East of I-35, the same downspout keeps Blackland clay wet against a slab that then heaves when the clay dries in August. And because the rain comes in bursts, a downspout is moving a lot of water for a short time. Whatever it discharges into has to take the surge.
Rain barrels
A 55-gallon barrel fills from a modest roof in the first ten minutes of a real storm. Everything after that is overflow, and a barrel without a proper overflow path dumps the rest at the foundation, which is worse than having no barrel. We set barrels up with:
- A diverter or a first-flush arrangement at the downspout so the barrel fills and then the downspout takes over
- An overflow outlet at least as large as the inlet, routed to an extension or drain, not the slab
- A mosquito screen on every opening (Travis County has enough of them)
- A level, raised pad so the spigot has head pressure for a hose
- On larger cisterns, a properly sized inlet that won't back the gutter up in a storm
Austin Water pays a rebate on rainwater harvesting systems, and Texas exempts harvesting equipment from sales tax. The amounts and rules change, so check Austin Water's rebate page before you buy, and keep the receipts. Texas Property Code 202.007 also stops an HOA from banning rain barrels outright, though it can set rules on placement and appearance. The downspout and foundation post covers where the overflow should go.
Rain chains
A rain chain replaces a downspout with a chain or a string of cups the water runs down. They look good on a porch or a courtyard, and they're quieter than a downspout in a light rain. The problem is capacity. A chain carries a fraction of what a 3x4 downspout does, and in a burst the water runs off the cups sideways and lands on the deck.
We install chains where they make sense: short runs, porch roofs, a garage eave, or as one of several outlets on a run that also has a proper downspout. Rain chain installation Austin homeowners ask for on the front elevation of a 40-foot run gets an honest conversation first. Where we do install one, it gets a proper outlet cup at the gutter, a basin or gravel bed at the bottom with a drain to carry the water away, and an anchor so it doesn't swing in the wind.
Buried downspout drains
When a rigid extension isn't enough, because the lot slopes toward the house, the downspout lands on a walkway, or a limestone slope is eroding, we bury a solid 4-inch line from the downspout to a pop-up emitter at the curb or a lower part of the yard. On rock lots this is a trenching job, not a shovel job, and we quote it after seeing the ground. On clay lots the line needs enough fall to drain dry, or it holds water and grows mosquitoes.
| Item | Typical Austin price |
|---|---|
| Rain barrel hookup with diverter and overflow | $150 – $350 |
| Rain chain with outlet cup and basin | $150 – $400 |
| Rigid downspout extension | $25 – $80 |
| Buried drain line to pop-up emitter, per downspout | $250 – $700 |
| Rock trenching surcharge, limestone lots | quoted |
Where this fits with the gutters
None of this works on a gutter that is undersized or pitched wrong. Every drainage job starts with a look at the gutter feeding it, and if the gutter needs repair or replacement, that's the first line on the estimate. If the house has no gutters, the barrel and the drain get designed into the new system and cost less than adding them afterwards.
Other gutter services
Gutter Repair
Leaking corners, sagging runs, crushed downspouts, overflow that isn't a clog, and the rotted fascia behind it, fixed in a morning with a written price.
Gutter Repair →Seamless Rain Gutter Installation
Seamless aluminum rain gutters run on site to fit your roof, sized for Austin's bursts of rain, with 3x4 downspouts as standard.
Seamless Rain Gutter Installation →Gutter Guards
Micro-mesh and screen guards, and an honest opinion about which ones survive live oak leaf drop, cedar elm and pecans and which become a shelf for debris.
Gutter Guards →Gutter Cleaning
Every run cleared by hand, downspouts flushed, debris bagged, and a ladder check of seams, hangers and fascia so you know about a problem before it's a repair.
Gutter Cleaning →Questions we get asked
Does Austin give a rebate for rain barrels?
Austin Water has a rainwater harvesting rebate program, and Texas exempts harvesting equipment from sales tax. Amounts and eligibility change, so confirm the current terms on Austin Water's site before you buy. We'll give you the receipt and the system details you need for the application.
Can a rain chain replace a downspout in Austin?
On a short run or a porch roof, yes. On a long run feeding a big roof, no; a chain carries a fraction of a 3x4 downspout's flow and sprays sideways in a burst. We often install a chain on the visible front corner and keep a proper downspout at the back of the same run.
Do I need a buried drain or is an extension enough?
Most flat lots do fine with a rigid extension carrying water four to six feet out. You need a buried line when the yard slopes toward the house, the downspout lands on a walkway or driveway, or a limestone slope is washing out. Buried lines run $250–$700 per downspout, more where we have to trench rock.
Need gutter work in Austin?
Call for a free estimate. Mon–Sat 7am–7pm.