How Long Can You Keep a Rental Dumpster in Des Moines? (2026)

March 12, 2026

TL;DR: Most Des Moines dumpster rental companies offer 7-14 day standard rental periods, with extensions available at $5-$15 per day. Roll Offs of Des Moines provides 10-day rentals with $5/day extensions, while other providers like Iowa Dumpsters offer 7-day base periods. Street placement requires city permits with potential duration limits, but driveway placement typically has no permit requirements. Plan for 20-30% longer timelines for winter projects due to Des Moines weather conditions.

How Long Can You Keep a Rental Dumpster in Des Moines?

When the demolition crew arrives Monday morning, you need to know exactly how long that dumpster can sit in your driveway before additional charges start accumulating. Learn more about what's included in Des Moines dumpster rental service. Based on our analysis of Des Moines dumpster rental company policies, customer reviews from multiple platforms, and local permit requirements collected in March 2026, standard rental periods in Des Moines range from 7 to 14 days depending on the provider you choose.

The rental period you'll get depends on which company you work with. According to Roll Offs of Des Moines, "The delivery of the box comes with an allocated 10 days on-site allowed," with extensions available at $5 per day beyond that initial period. Other local providers follow different models—Iowa Dumpsters notes that "Standard rental periods are often 7 days," while Dumpster Dudes offers "Common rental lengths include 7-day, 14-day, and 30-day rentals."

Industry data from Bin There Dump That confirms that "Most reputable rental dumpster bin companies will allow you to keep the bin for around 5 to 14 days," which aligns with what Des Moines providers offer. Interestingly, the same source notes that "the average stay of a dumpster in a driveway is about three and a half days," suggesting most customers finish their projects well before the rental period expires.

Quick Reference: Common Project Timelines

Before reviewing provider options, here's what you can expect for typical Des Moines projects:

  • Roof replacements: 5-7 days
  • Kitchen demolitions: 10-14 days
  • Bathroom renovations: 7-10 days
  • Whole-house cleanouts: 14-21 days
  • Garage cleanouts: 3-5 days
  • Deck removals: 3-5 days

The rental period starts on your delivery date, not when you book. If weather delays delivery by three days, those three days don't count against your rental period. This matters in Des Moines, where winter weather can create scheduling complications.

Here's what you need to know about rental durations from Des Moines companies:

Provider Standard Period Extension Cost Notes
Roll Offs of DSM 10 days $5/day Clearest pricing transparency
Iowa Dumpsters 7 days Contact for pricing Standard residential rental
Dumpster Dudes Flexible (7-30 days) Varies by rental length Custom project-based scheduling

Key Takeaway: Des Moines dumpster rentals typically last 7-10 days with extensions at $5-$15/day. Choose 10-day providers like Roll Offs of DSM to minimize extension dependency, or opt for flexible 14-30 day rentals upfront if your project timeline is uncertain.

What Are Standard Rental Periods from Des Moines Companies?

Des Moines dumpster rental companies structure their base rental periods differently, which affects both your upfront cost and flexibility. Learn more about top Des Moines dumpster rental companies. The most common models you'll encounter are fixed 7-day periods, 10-day standards, and flexible custom durations based on your project needs.

Roll Offs of Des Moines operates on a 10-day model where "The delivery of the box comes with an allocated 10 days on-site allowed." This gives you a longer base period than many competitors. Their extension policy is straightforward: "Additional days beyond the 10 day period are $5.00 per day." This transparency makes budgeting easier—if you think you'll need 14 days, you know upfront it'll cost an extra $20 beyond the base rental fee.

Iowa Dumpsters, a local Des Moines provider, follows the more traditional 7-day model. Their standard rental periods align with what Bin There Dump That describes as industry practice: "Majority of Bin There Dump That franchisees usually charge on a 7-day basis and then on a per-day basis if you need the bin longer." The 7-day structure works well for focused projects like roof replacements or garage cleanouts where you can complete the work within a week.

Dumpster Dudes takes a different approach with flexible rental lengths. They offer "Common rental lengths include 7-day, 14-day, and 30-day rentals," allowing you to book the duration you need upfront rather than relying on extensions. This model suits larger renovation projects where you know you'll need the dumpster for several weeks.

What's included in your base rental period matters as much as the duration. According to Govavia, "A standard dumpster rental typically lasts between 7 to 10 days" and includes delivery, pickup, disposal fees up to a weight limit (usually 1-2 tons for residential sizes), and the rental period itself. You're paying for the container, the hauling service, and the disposal—not just the days it sits in your driveway.

The booking timeline also affects your rental period. Dumpster Dudes recommends "booking at least 2 to 3 days in advance, especially during busy seasons or if you need a specific delivery time." During peak construction season (April through October in Des Moines), booking further ahead ensures you get your preferred delivery date, which is when your rental period actually begins.

Here's how the math works for a typical 20-yard dumpster rental:

  • 7-day base rental: $350-$450 (varies by company and included tonnage)
  • 10-day base rental: $375-$475 (slightly higher upfront, but includes more days)
  • 14-day upfront booking: $400-$525 (best value if you know you need two weeks)

If you book a 7-day rental but need 14 days total, you'll pay the base fee plus 7 days of extensions. At $10/day (a common rate), that's $70 extra, bringing your total to $420-$520. Compare that to booking 14 days upfront at $400-$525, and the difference is minimal—but the upfront booking eliminates the hassle of calling for extensions.

Key Takeaway: Des Moines providers offer 7-day ($350-$450), 10-day ($375-$475), or flexible 14-30 day rentals. Book 10-day periods for most residential projects, or choose 14-day upfront rentals for renovations to avoid extension fees and scheduling calls.

How Much Do Dumpster Extensions Cost in Des Moines?

Extension costs in Des Moines vary by provider, but you'll typically pay between $5 and $15 per day beyond your initial rental period. Learn more about Des Moines dumpster rental pricing. Roll Offs of Des Moines offers the most competitive rate we found: "If you need your dumpster for more than 10 days, there is an additional fee of $5.00 per day for as many days as you need the dumpster." This makes them an economical choice if you anticipate needing extensions.

Understanding Daily Extension Rates

The daily rate structure is straightforward but adds up quickly for extended projects. At $5/day, a week extension costs $35. At the industry-standard $10/day rate, expect $70 for seven additional days. At the higher end ($15/day), a week costs $105.

According to Affordable Roll Offs, "rental companies will allow customers to keep dumpsters for as little as three days or as long as 14 days without additional cost," but beyond that initial period, daily fees accumulate quickly.

Break-Even Analysis: Extensions vs. New Rentals

The economics of extensions versus new rentals become important around the 14-day mark. Let's calculate a real scenario:

7-day rental extended to 21 days:

  • Base rental (7 days): $400
  • Extension (14 days × $10/day): $140
  • Total: $540

Two separate 7-day rentals:

  • First rental: $400
  • Second rental: $400
  • Total: $800

The extension saves you $260 in this scenario, making it the clear winner for continuous projects.

When Swap-Out Service Makes Sense

However, if you need to swap out a full dumpster and get an empty one, the calculation changes. Swap-out services (where they haul away your full dumpster and deliver an empty one) typically cost $75-$150 in Iowa markets, though Des Moines-specific pricing requires calling providers directly.

Here's when extensions make financial sense versus booking a new rental:

Choose extensions when:

  • You need 1-14 additional days beyond your base period
  • Your dumpster isn't full yet and you're still generating waste
  • The extension cost is under 40% of a new rental fee
  • You're working on a continuous project without natural break points

Choose a new rental when:

  • You need the dumpster for 21+ additional days (extensions become cost-prohibitive)
  • Your current dumpster is full and you need more capacity
  • You're starting a new project phase with different waste types
  • The total extension cost exceeds 50% of a new rental

The timing of your extension request matters. Dumpster Dudes notes that booking "at least 2 to 3 days in advance" applies to extensions too—call before your rental period expires to avoid potential late fees or scheduling conflicts. Most companies require 24-48 hours notice for pickup scheduling, so the same lead time applies when you're requesting to keep the dumpster longer.

Key Takeaway: Des Moines dumpster extensions cost $5-$15/day, with Roll Offs of DSM offering the lowest rate at $5/day. Extensions remain economical for up to 14 additional days ($70-$210), but beyond 21 total days, booking a new rental or swap-out becomes more cost-effective.

Do You Need a Permit to Keep a Dumpster in Des Moines?

Permit requirements in Des Moines depend entirely on where you place the dumpster. If you're putting it in your driveway or on your private property, you typically don't need a city permit. But if you need to place it on the street or in the public right-of-way, Des Moines requires a permit that may limit how long you can keep it there.

Roll Offs of Des Moines clarifies the city's position: they note that Des Moines requires permits for street placement, and you should "Call 515-283-4950 for permit information" to get current requirements and duration limits. The city's Public Works department handles these permits, and they'll tell you exactly how long you can keep a dumpster on city property.

Based on comparable Iowa cities, Des Moines likely allows 14-30 days for temporary obstruction permits, though you'll need to verify the specific duration limit when you call. Cities typically structure these permits to accommodate construction projects while preventing long-term street blockage. If your project runs longer than the permit allows, you may need to renew it or move the dumpster to private property.

According to GST Services, "Typically, municipalities do not impose specific time constraints on how long you can keep a dumpster on your private property," which aligns with Des Moines practice. Your driveway placement is governed by your property rights, not city ordinances—though HOA restrictions may apply in some neighborhoods.

Here's how placement affects your rental duration:

Driveway placement (private property):

  • No city permit required
  • No city-imposed time limits
  • Rental period determined by your agreement with the dumpster company
  • Possible HOA restrictions in subdivisions (typically 7-14 days)
  • Must ensure adequate space: Dumpster Dudes notes "Our smallest dumpster has a footprint similar to a standard car, and our largest is about the size of an enclosed landscape trailer"

Street placement (public right-of-way):

  • City permit required (call 515-283-4950)
  • Permit duration limits apply (likely 14-30 days)
  • Permit fees vary (typically $25-$75 in Iowa cities)
  • May require traffic control measures or reflective markings
  • Renewal possible but not guaranteed

HOA restrictions in Des Moines suburbs like West Des Moines, Ankeny, and Urbandale can be stricter than city requirements. Many subdivision covenants limit visible dumpsters to 7-14 days to maintain neighborhood aesthetics. Before booking your rental, check your HOA's architectural review guidelines or call your property management company to confirm any time restrictions.

The permit process typically takes 2-3 business days in Des Moines, so factor this into your project timeline. If you need the dumpster delivered on Monday, apply for your street placement permit by the previous Wednesday to ensure approval before delivery. Some dumpster companies will handle permit applications for you, but this isn't universal—ask when you book.

For projects near Des Moines Dumpsters Rental Servicing all of Des Moines Metro, working with a local provider familiar with city permit requirements can streamline the process. Des Moines Dumpsters Rental serves the entire Des Moines metro and can guide you through placement options that avoid permit complications while meeting your project needs.

Key Takeaway: Des Moines requires permits for street-placed dumpsters (call 515-283-4950), likely limiting duration to 14-30 days. Driveway placement needs no city permit but may face HOA restrictions of 7-14 days in subdivisions. Always verify placement rules before booking to avoid mid-project complications.

What Factors Determine How Long You Need a Dumpster?

Your project type is the primary factor determining rental duration. Learn more about dumpster rentals for home cleanouts. Learn more about choosing the right dumpster size. The complexity, scope, and weather conditions create significant timeline variability. Understanding these factors helps you book the right rental period from the start.

Project Timeline Planning Guide

According to HomeAdvisor, "Most residential roof replacements take 1 to 3 days to complete, depending on the size and complexity." Add two buffer days for weather or material delays, and you're looking at a 5-day dumpster rental for a typical Des Moines roofing project.

Kitchen renovations follow a different timeline. HomeAdvisor's kitchen remodeling data shows "A kitchen remodel typically takes 6 to 12 weeks, depending on the scope. Demo and rough-in work happens in the first 1-2 weeks." The demolition phase is when you'll generate the most waste, so a 10-14 day rental covers the disposal-heavy period without paying for weeks when the dumpster sits empty during finish work.

Affordable Roll Offs provides specific project timelines that help with planning:

  • "Bathroom remodel: 13-25 Days"
  • "Kitchen remodel: 1 month – 5 months"
  • "Hardwood floor installation: 1-3 days"

These ranges account for the full project, but your dumpster rental only needs to cover the demolition and disposal phases. For a bathroom remodel taking 13-25 days total, you might only need the dumpster for the first 7-10 days during demo and rough-in work.

Weather Delays and Seasonal Considerations

Weather delays significantly impact Des Moines project timelines, especially during winter months. Des Moines receives an average of 34.7 inches of snow annually, with the heaviest accumulation in January and February. Outdoor projects during these months typically take 20-30% longer than summer projects due to:

  • Frozen ground delaying excavation or foundation work
  • Snow removal before work can begin each day
  • Shorter daylight hours limiting productive work time
  • Material delivery delays during winter storms
  • Contractor scheduling conflicts as weather creates backlogs

If you're planning a December roofing project that would take 3 days in July, budget for 4-5 days in winter. That means booking a 7-day rental instead of a 5-day rental to account for weather-related delays.

Contractor Scheduling Impact

Contractor scheduling also affects how long you'll need the dumpster. Even if the actual work takes 5 days, contractors may schedule your project across 10 calendar days due to other commitments. Ask your contractor for their realistic timeline, not their best-case scenario, then add 40% as a buffer. A contractor promising "5 days" likely means 7-8 actual days when you factor in scheduling realities.

Here are realistic dumpster rental durations for common Des Moines projects:

Roofing projects:

  • Asphalt shingle replacement (1,500 sq ft): 5-7 days
  • Metal roof installation: 7-10 days
  • Roof and gutter replacement: 7-10 days
  • Winter roofing projects: Add 2-3 days

Interior renovations:

  • Kitchen demolition only: 3-5 days
  • Full kitchen remodel (demo phase): 10-14 days
  • Bathroom renovation: 7-10 days
  • Basement finishing (demo/framing): 10-14 days

Cleanout projects:

  • Garage cleanout: 3-5 days
  • Estate cleanout: 10-14 days
  • Whole-house cleanout: 14-21 days
  • Foreclosure cleanout: 7-10 days

Landscaping projects:

  • Deck removal: 3-5 days
  • Fence removal: 2-3 days
  • Tree removal and cleanup: 5-7 days
  • Yard waste from major landscaping: 7-10 days

DIY projects typically take 2-3 times longer than contractor-led projects because you're working evenings and weekends rather than full days. If a contractor could complete your garage cleanout in 3 days, plan for 7-10 days if you're doing it yourself on weekends.

Key Takeaway: Roof replacements need 5-7 days, kitchen demos 10-14 days, and whole-house cleanouts 14-21 days in Des Moines. Add 20-30% to winter project timelines for weather delays, and double DIY project estimates since you're working part-time. Always book one rental period longer than your contractor's estimate.

How Do You Schedule Pickup or Extend Your Rental?

Scheduling pickup or requesting an extension requires direct contact with your dumpster rental company—there's no universal online portal for Des Moines providers. You'll need to call during business hours, which Roll Offs of Des Moines lists as "Monday to Friday from 7 am to 5 pm." Most local providers follow similar schedules, so plan to make your call during weekday business hours.

The advance notice requirement matters for both pickups and extensions. Dumpster Dudes recommends "booking at least 2 to 3 days in advance," and this same lead time applies when you're ready for pickup or need to extend your rental. Waste hauling companies operate on scheduled routes, and fitting you into their existing schedule requires advance planning.

According to Bin There Dump That, "Your dumpster rental should arrive when promised and should take no longer than 24 hours within ordering the container," but pickup scheduling follows different logistics. Most Des Moines providers can schedule pickup within 24-48 hours of your call, though same-day pickup is rarely available unless you call early in the morning and they have a truck in your area.

Here's the typical process for requesting an extension:

  1. Call your provider 2-3 days before your rental period expires
  2. Provide your account information (address, rental agreement number)
  3. Specify how many additional days you need
  4. Confirm the daily extension rate (should match what you were quoted initially)
  5. Get a new pickup date or confirm you'll call when ready

The extension is typically approved immediately over the phone, and the daily charges are added to your final bill. Roll Offs of Des Moines makes this straightforward: "Additional days beyond the 10 day period are $5.00 per day," so you know exactly what you're paying for each extra day.

For pickup scheduling when you're done with the dumpster:

  1. Call at least 48 hours before you want pickup
  2. Confirm the dumpster is ready (not blocked by vehicles, accessible for the truck)
  3. Ask for a specific pickup date (they'll give you a day, not usually a specific time)
  4. Ensure someone will be home if the dumpster is in a gated area or requires special access
  5. Confirm final charges including any overage fees if you exceeded weight limits

Early pickup options exist, but don't expect a refund for unused days. The rental period is purchased upfront, similar to renting equipment—you're paying for availability, not just usage. If you finish your project on day 3 of a 7-day rental and call for early pickup, you've still paid for the full 7 days. The benefit of early pickup is freeing up your driveway space and avoiding the risk of neighbors or contractors adding unauthorized items to your dumpster.

Same-day swap service (where they pick up your full dumpster and deliver an empty one) is available from some Des Moines providers, but it requires advance scheduling and typically costs $75-$150 for the additional delivery and disposal. This makes sense for large projects where you'll definitely fill multiple dumpsters, but for most residential projects, a single dumpster with an extension is more economical.

Strategic timing can maximize your rental period. Bin There Dump That notes that "Rent the dumpster on a Friday or Saturday and most Bin There Dump That franchise locations will allow you to keep the dumpster for the additional weekend, if necessary." This means a Friday delivery with a 7-day rental gives you through the following Friday, capturing two weekends of work time if you're doing a DIY project.

Key Takeaway: Call your Des Moines dumpster provider 48 hours before needing pickup or extensions. Extensions are approved immediately at $5-$15/day, but same-day pickup is rarely available. Book Friday deliveries to capture two weekends within a 7-day rental period for DIY projects.

Recommended Local Dumpster Rental Service

When you're planning a renovation, cleanout, or construction project in Des Moines, working with a local provider who understands city permit requirements and seasonal scheduling challenges makes the rental process smoother. Des Moines Dumpsters Rental Servicing all of Des Moines Metro offers roll-off dumpster rentals for both commercial and residential projects throughout the Des Moines metro area.

Local providers like Des Moines Dumpsters Rental bring several advantages to your project:

  • Familiarity with Des Moines permit requirements for street placement and right-of-way restrictions
  • Understanding of seasonal scheduling challenges during Iowa winters when weather delays are common
  • Flexible rental periods that can be adjusted as your project timeline changes
  • Local customer service with business hours that align with Des Moines contractors and homeowners
  • Knowledge of disposal regulations specific to Polk County and Des Moines waste management requirements

The 7-day standard rental period that Iowa Dumpsters offers aligns with typical residential project timelines while providing extension options when weather or contractor delays extend your project. For larger renovations or commercial projects, discussing your specific timeline upfront helps ensure you book the right rental duration from the start.

Whether you're replacing a roof, renovating a kitchen, or handling an estate cleanout, starting with a local provider who serves the entire Des Moines metro gives you the flexibility to adjust your rental as your project evolves. Learn more about rental options and current availability at Des Moines Dumpsters Rental.

FAQ: Des Moines Dumpster Rental Duration

Can you extend a dumpster rental in Des Moines? For more details, see rental duration details .

Direct Answer: Yes, all Des Moines dumpster rental companies allow extensions beyond your initial rental period, typically at $5-$15 per day.

Roll Offs of Des Moines explicitly states "Additional days beyond the 10 day period are $5.00 per day," making them one of the most affordable extension options in the metro. Call your provider 48 hours before your rental period expires to request an extension and avoid potential late fees.

How much does it cost to keep a dumpster an extra week in Des Moines?

Direct Answer: An extra week (7 days) costs $35-$105 depending on your provider's daily extension rate.

At Roll Offs of Des Moines' rate of $5/day, a 7-day extension costs $35. If your provider charges $10/day (a common rate), you'll pay $70 for the extra week. At the higher end of $15/day, a week extension costs $105. This is significantly cheaper than booking a new rental, which typically starts at $350-$450.

What happens if you go over your rental period in Des Moines?

Direct Answer: You'll be charged daily overage fees, typically $10-$25 per day, which are higher than pre-approved extension rates.

Most Des Moines providers automatically extend your rental and bill you for the additional days, but the rate may be higher than if you'd called to request an extension proactively. Roll Offs of Des Moines charges $5/day for approved extensions, but late fees for unplanned overages aren't published—call before your period expires to get the lower rate.

Do Des Moines dumpster companies offer same-day pickup?

Direct Answer: Same-day pickup is rarely available; most Des Moines providers require 24-48 hours notice for scheduled pickup.

Waste hauling companies operate on planned routes, and fitting in an unscheduled pickup requires route flexibility that isn't always available. Dumpster Dudes recommends "booking at least 2 to 3 days in advance" for both delivery and pickup to ensure availability.

How long can a dumpster sit on the street in Des Moines?

Direct Answer: Des Moines requires permits for street-placed dumpsters, likely limiting duration to 14-30 days based on comparable Iowa city policies.

Call Des Moines Public Works at 515-283-4950 to confirm current permit duration limits and costs. Roll Offs of Des Moines notes that the city requires permits for street placement, and these permits typically have time restrictions to prevent long-term obstruction of public right-of-way.

What's the maximum rental period for a dumpster in Des Moines?

Direct Answer: Most Des Moines providers offer rentals up to 30 days, with longer periods available through negotiated agreements.

Dumpster Dudes explicitly offers "7-day, 14-day, and 30-day rentals" as standard options. For construction projects requiring longer durations, contact providers directly to discuss monthly rental rates, which are typically more economical than daily extensions beyond 30 days.

Can you get a refund for early dumpster pickup in Des Moines?

Direct Answer: No, most Des Moines providers don't offer refunds for unused rental days since you're purchasing the full rental period upfront.

The rental period is a purchased service, similar to equipment rentals—you're paying for availability, not just usage. If you finish your project early and call for pickup on day 3 of a 7-day rental, you've still paid for the full period. The benefit is freeing up your driveway space, not recovering unused rental costs.

How do winter weather delays affect dumpster rental duration in Des Moines?

Direct Answer: Winter projects in Des Moines typically take 20-30% longer than summer projects due to snow, frozen ground, and shorter work days.

A roofing project that takes 3 days in July might require 4-5 days in December. Book 7-day rentals instead of 5-day rentals for winter projects, and communicate with your provider about weather-related extension needs—most are flexible during Iowa winters.

For personalized guidance on this topic, Des Moines Dumpsters Rental Servicing all of Des Moines Metro ( https://iowa-dumpsters.com ) can help you find the right approach for your situation.

Conclusion

Des Moines dumpster rental periods range from 7 to 14 days depending on your provider, with extensions available at $5-$15 per day when your project runs longer than expected. Roll Offs of Des Moines offers 10-day rentals with $5/day extensions, while Iowa Dumpsters and other local providers offer 7-day base periods with flexible extension options.

Plan your rental duration based on your specific project type—roof replacements typically need 5-7 days, kitchen renovations 10-14 days, and whole-house cleanouts 14-21 days. Add 20-30% to these estimates for winter projects when Des Moines weather creates delays. Call your provider 48 hours before your rental period expires to request extensions and avoid higher late fees.

For street placement, remember that Des Moines requires permits (call 515-283-4950) that may limit how long you can keep the dumpster in the public right-of-way. Driveway placement avoids city permits but may still face HOA restrictions in some Des Moines suburbs. When you're ready to book your rental, contact Des Moines Dumpsters Rental or compare quotes from multiple local providers to find the rental period and pricing that fits your project timeline.

March 10, 2026
Compare top dumpster rentals for home cleanouts. Real pricing, size recommendations, and booking tips to avoid hidden fees.
March 10, 2026
Compare top dumpster rentals for home cleanouts. Real pricing, size recommendations, and booking tips to avoid hidden fees.
March 8, 2026
Dumpster size guide for renovations with room-by-room calculations. Compare 10, 20, and 30-yard options with real project examples and weight limits.
March 4, 2026
Des Moines dumpster rentals include delivery, pickup, disposal fees, and rental periods. Compare sizes, restrictions, and hidden costs.
By Asim Huskanovic March 3, 2026
HOW LONG CAN I KEEP THE DUMPSTER?
March 2, 2026
Des Moines dumpster rental periods: 7-14 days standard, extensions available. City permit rules, costs, and how to avoid fees.
February 28, 2026
Compare top 8 Des Moines dumpster rental companies. Real pricing, delivery times, and size options to help you choose the right provider.
February 26, 2026
Find the right dumpster size for your Des Moines project. Compare 10-40 yard options with real costs and project examples.
February 25, 2026
Des Moines dumpster rental costs $265-$670 depending on size. Compare prices by project type, duration, and hidden fees to avoid surprise charges.
By Asim Huskanovic June 10, 2025
Top 5 Mistakes to Avoid When Renting a Dumpster in Des Moines