Built from heavy-duty nonwoven geotextile, dewatering silt bags connect directly to your discharge hose so pumped water flows through the bag while silt, sand, sludge, and suspended solids stay inside. Each sludge dewatering bag acts as a temporary on-site filter, simplifying sediment control without adding tanks or permanent structures, and is commonly used on construction sites, stormwater detention ponds, processing ponds, canals, and other small waterways where clear, compliant discharge is required. By containing sediment and fines inside the bag, dewatering silt bags help contractors and municipalities meet stormwater runoff control and NPDES requirements without permanent infrastructure.
Dewatering Silt Bags
Dewatering silt bags are filter bags for sediment and sludge at construction sites, stormwater, ponds, and dredging
Dewatering Silt Bag Overview
Large Dewatering Bags for Silt
Dewatering Silt Bag Specifications
8 oz. Dewatering Bag Specifications
| Size | Capacity | Filter Rate | A.O.S. | Microns |
|---|---|---|---|---|
| 4' x 6' | 1 yds³ | 80 gpm/ft² | 80 US Sieve | 177 |
| 5' x 6' | 1.14 yds³ | 80 gpm/ft² | 80 US Sieve | 177 |
| 6' x 6' | 1.44 yds³ | 80 gpm/ft² | 80 US Sieve | 177 |
| 10' x 15' | 6 yds³ | 80 gpm/ft² | 80 US Sieve | 177 |
| 15' x 15' | 9.6 yds³ | 80 gpm/ft² | 80 US Sieve | 177 |
| 15' x 20' | 12 yds³ | 80 gpm/ft² | 80 US Sieve | 177 |
| 15' x 25' | 15 yds³ | 80 gpm/ft² | 80 US Sieve | 177 |
10 oz. Dewatering Bag Specifications
| Size | Capacity | Filter Rate | A.O.S. | Microns |
|---|---|---|---|---|
| 4' x 6' | 1 yds³ | 60 gpm/ft² | 100 US Sieve | 149 |
| 5' x 6' | 1.14 yds³ | 60 gpm/ft² | 100 US Sieve | 149 |
| 6' x 6' | 1.44 yds³ | 60 gpm/ft² | 100 US Sieve | 149 |
| 10' x 15' | 6 yds³ | 60 gpm/ft² | 100 US Sieve | 149 |
| 15' x 15' | 9.6 yds³ | 60 gpm/ft² | 100 US Sieve | 149 |
| 15' x 20' | 12 yds³ | 60 gpm/ft² | 100 US Sieve | 149 |
| 15' x 25' | 15 yds³ | 60 gpm/ft² | 100 US Sieve | 149 |
Dewatering Silt Bag Details
Dewatering silt bags are used for sediment and sludge filtration at construction sites, ponds, dredging locations, and stormwater detention ponds. These dewatering silt bags, sediment filter bags, and sludge dewatering bags are designed for construction dewatering, stormwater runoff control, and polluted water discharge where silt, sand, and suspended solids need to be captured inside a strong nonwoven geotextile bag before water is released back to the environment.
Dewatering Silt Bag Benefits
- Contains silt, sediment and oils
- Produces clear, clean, compliant water discharge
- Helps comply with NPDES, 40 CFR 122.26 (1999) and TMDL requirements.
Dewatering Silt Bag Features
- Standard and custom sizes available
- Accomodates up to a 4” discharge hose
- Options hose connectors available
Types of Dewatering Silt Bags
- 8 oz. Sediment Filter Bags - Our lightest silt bag uses an 8 ounce nonwoven geotextile fabric, best suited for thinner sediment/water mixes. Large dewatering bags in this weight are often used to dredge public golf course water hazards and other dredging locations, and on small construction projects to filter and control polluted runoff so unwanted materials do not leave the job site. See the Dewatering Bags Flyer and fillable dewatering questionnaire to help match the right dewatering silt bag to your project.
- 10 oz. Sediment Filter Bags - The 10 ounce silt filtration bag is the heavy duty option for removing sludge with thicker mixtures. These dewatering sediment bags are commonly used by cities that maintain stormwater detention ponds as part of a Stormwater Pollution Plan, and at facilities with processing ponds. Heavier sludge and sediment buildup in stormwater retention ponds, canals, and small boat waterways often requires this more substantial dewatering silt bag solution.
Downloads for Dewatering Silt Bags
- Dewatering Bags Flyer (PDF) – details on dewatering silt bags, sediment filter bags, sizes, and specifications.
- Dewatering Questionnaire – tell us about your site so we can match the right sludge dewatering bags and sediment filtration options.
- Dewatering Bag Overview (PDF) – overview of dewatering silt bags, dewatering filter tubes, and related products.
Dewatering Silt Bag Applications
- Construction Site Dewatering & Sediment Control: Construction site dewatering and sediment control where silt, sediment, and sludge must be captured before discharge.
- Golf Course Water Hazards & Pond Dredging: Public golf course water hazards and ponds where sludge and suspended silt need to be removed and water kept clear.
- Dredging Locations with Suspended Silt & Sludge: Dredging locations that generate suspended silt and sludge, requiring containment inside the dewatering silt bags.
- Stormwater Detention & Retention Ponds: Stormwater detention and retention ponds where sediment and sludge buildup must be filtered for compliant discharge.
- Processing Ponds at Industrial or Commercial Facilities: Processing ponds at industrial or commercial facilities where sludge dewatering bags help control polluted runoff and solids.
- Canals & Small Boat Waterways: Canals and small boat waterways requiring sludge removal and capture of silt and sediment before water is released.
- Stormwater Runoff & NPDES Compliance Projects: Stormwater runoff and NPDES compliance projects that rely on sediment filter bags to keep discharge water clear and compliant.
To see all of our dewatering products, visit our dewatering products overview page or see this dewatering bag overview (PDF).
Dewatering Silt Bags
