Pumps (0)
| Pump |
Drains (1)
| Area Drain |
| Roof Drain |
| Unknown |
| Yard Drain |
Wells (2)
| Dry/Wet Well |
Clean Outs (3)
Oil Water Separators (4)
| Spill Control |
Filters (5)
Filterra (37)
Catch Basins (6)
| Curb Inlet |
| Type I |
| Type I-L |
| Type II |
| Unknown |
| Private System Type I |
| Private System Type I-L |
| Private System Type II |
| Private System Stormceptor |
| Private System Unknown |
| Other Unknown |
Control Structures (7)
| Flow Control |
CDS Structures (8)
| CDS Structure |
|
| Private CDS Structure |
Private Inspection (9)
Source Control Inspection Facility (36)
Non-MS4 Area (10)
Modular Wetlands (11)
| City of Maple Valley |
| Private System |
Inlets (12)
| Headwall |
Outlets (13)
| Outlet |
| Endwall |
Outfalls (14)
| Outfall |
Manholes (15)
Open Channels (16)
| Ditch |
| Infiltration |
| Stream |
| Swale |
| Biofiltration Swale |
Tanks (17)
| Detention Tank |
| Infiltration Tank |
Connections Downspout (18)
Pipes (19)
| Collector (10" or less, or Unknown) |
| Collector (12" to 18") |
| Collector (24" or more) |
| Culvert |
| Detention |
| Infiltration |
| Private Collector,10" or less/Unknown |
| Private Collector,12"-18") |
| Private Collector, 24"+ |
| Private Detention |
| Private Infiltration |
| Private Unknown |
| Driveway Culvert |
| Unknown |
Force Mains (20)
| Force Mains |
Detention Vaults (21)
| Detention Vault |
Filtration Vaults (22)
| Biofiltration |
| Sandfilter |
| Stormfilter |
| Unknown |
Infiltration Vaults (23)
Wet Vaults (24)
Ponds (25)
| Bioretention Pond |
| Detention Pond |
| Infiltration Pond |
Easements (26)
| Easements |
Infiltration Gallery (27)
| Chamber System |
| Perforated Pipe System |
| Perforated Tank System |
Inspection Port - Gallery (28)
Spot Check (29)
Stormwater Basins (30)
| Cedar River |
| Covington Creek |
| Cranmar Creek |
| Jenkins Creek |
| Lake Sawyer |
| Lake Wilderness |
| Rock Creek |
| Rock Creek South |
| South Fork Jenkins Creek |
Maintenance Zones (31)
| Zone 1 |
| Zone 2 |
SWM Utility District (32)
| Cedar River Water & Sewer District |
| Covington Water District |
Access Hatch (33)
Maintenance Tract (34)
Public Private Connection (35)
| Private-To-Public |
| Public-To-Private |
|
