Stormwater Quality Design Manual (May 2007) - City of Sacramento ...

Runoff Treatment Control Measure Fact SheetWater Quality Detention BasinsTable DB-3: Plants for Areas that are Periodically InundatedPROPAGATIONMETHODScientific nameEmergent speciesCommon nameCarex densa Dense sedge Carex barbarae Santa Barbara sedge Cyperus eragrostis Tall faltsedge Eleocharis macrostachya Creeping spikerush Juncus balitcus Baltic rush Juncus xiphioides Irish-leaved rush GrassesHordeum brachyantherum Meadow barley Leptochloa fascicularis Bearded sprangle-top Muhlenbergia rigens Deergrass Paspalum distichum Paspalum Phalaris arundinaceae Reed canary grass Phalaris lemmonii Lemmon’s canary grassseed Herbaceous speciesPolygonum lapathifolium Willow weed Polygonum punctatum Dotted smartweed Verbena hastate Blue vervain PLUGCONTAINERSTOCKSEEDNotesBest where soil issaturated for greaterdurationLocate where soil is mostapt to be saturatedLocate near borders wheresoil dries out firstConstruction Considerations• Before acceptance of the basin by the local agency, the accumulated sediment most be removed.• See “Recommended Planting Guidelines” later in this fact sheet for information on plantingtechniques and recommended planting times.• Take steps to ensure plants become established:• Plant emergent species bordering the permanent pond in saturated soil, so the plants willbecome established. Maintain the water level in the pond to allow for soil saturation orshallow inundation around the base of the plants, but avoid significant flooding andinundation of stems and leaves during the first year. Tall plugs and plantings can tolerategreater depths of inundation as long as a significant portion of the stems and leaves of theplantings remain above the water surface.• Provide drip irrigation for plantings in areas that will not be saturated to the surface orinundated. Irrigate as needed at least during the first two years--until the plants can survive onannual rainfall and/or groundwater.• Irrigate hydroseeded areas only if needed for plant establishment. Hydroseeded portions ofthe bank do not need irrigation in years of normal rainfall. If a period of drought occurs afterhydroseeding, supplemental watering may be needed to establish germination in the first year.Stormwater Quality Design Manual for the Sacramento and South Placer RegionsDB-10 May 2007