Drainage Design Manual - the City of San Luis Obispo

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11.5.8 Special Plant CharacteristicsOnce a list of potential plant species is generated based on a preferred channel type andavailable planting zones, the list can be refined by considering special plantcharacteristics (Figure 11-2). Plant characteristics useful to consider for revegetationprojects in channel environments include:• Establishment Potential - Is the plant easily established? Does the plant requirespecial or excessive maintenance to enable it to be sustained by the availableresources at the planting site?• Life Form - Is the plant a tree, shrub, low growing herb or grass?• Plant Size - What is the plants expected height and width at maturity?• Longevity - Is the plant long-lived?• Structural Integrity - Does the plant break apart easily under natural stresses (i.e.,does it shed large branches in storms or high winds)?• Availability - Is the plant easily propagated and/or commonly available at nativeplant nurseries? Can propagules be easily obtained at local sites?• Invasiveness - Does the plant have the potential to spread rapidly and overwhelmthe rooting space and growth potential of other plants? Can the plant'sInvasiveness cause damage to flood control structures within the channel?• Age - Diverse uneven aged riparian woody vegetation provides stable channelcorridor. Willows need to be maintained in locations such as this as specified inthese Guidelines in order to maintain flood control capacity.• Erosion Control Potential - Does the plant contribute significantly to soilstabilization?• Special Tolerances - Can the plant withstand periods of inundation, drought,shade, and/or high winds? Is the plant fire resistant?• Aesthetic Value - Does the plant have attractive foliage, flowers and/or fruits?• Toxicity - Is the plant poisonous to humans, livestock, pets and/or wildlife?• Seasonal Leaf Retention - Is the plant deciduous or evergreen?• Screening and Barrier Values - Does the plant present a significant barrier toaccess, visibility, wind, noise, dust, etc.?• Wildlife Value - Does the plant provide significant habitat opportunities andresources for wildlife species?SLO Creek Drainage Design Manual 146 February 2003
Exotic Treeto be RemovedNative Treeto be ProtectedWillow Thicket. Identify Species, Thinand Selectively Remove.Remove Lower Limbs to Manage CreekFlowsBEFOREBEFOREPlant New NativeSpecies On Upper BankAFTERWillows Trimmed to Single Trunks.Lower Branches Removed for Creek FlowsCanapy Vegetation Remains to Shade CreekAFTERVegetative ManagementDrainage Design ManualCity & County of San Luis ObispoFigure11-2QUESTA ENGINEERING CORPORATION
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San Luis Obispo CreekWaterway Manag
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SECTION 4.0 HYDROLOGIC & HYDRAULIC
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SECTION 8.0 DESIGN OF DRAINAGE PUMP
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11.12 Erosion Control Seeding......
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DRAINAGE DESIGN MANUALFOR THECITY O
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ôó1Ragged PointSan SimeonCambriaM
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SECTION 2.0PROJECTS REQUIRING HYDRO
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3. or, is an individual development
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• Geomorphic, Geotechnical and St
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SECTION 3.0CORE REQUIREMENTS AND RE
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elevations, and existing channel st
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1000 0 1000 Meters1 0 1 MilesCity L
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N300 0 300 MetersLEGEND100-Year Flo
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• All streets to be dedicated to
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• A minimum setback of 15 m (50 f
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3.6.4 Preference for Vegetative and
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compliance with the measures prescr
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4.1 Hydrologic Analysis4.1.1 Genera
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Table 4-1Runoff CoefficientsHydrolo
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Overland Flow TimeSLO Creek Phase I
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Channel or Pipe Flow occurs where f
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45745766071176260955855860971166050
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Table 4-3Rainfall - Intensity Data
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4.1.4 Example ProblemA sample basin
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Table 4-7Example Composite Runoff C
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Table 4-9Example Rational Method Ru
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developed. For minor waterways and
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SECTION 5.0OPEN CHANNEL ANALYSIS AN
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case, a Natural Channel may be modi
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5.2 Channel Design Flow Requirement
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maintenance to maintain the design
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The following guidelines should be
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Channel PlanformDrainage Design Man
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• Native vegetation shall be pres
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Manning’s Roughness Values are pr
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6.1 GeneralSECTION 6.0ANALYSIS & DE
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6.3 Design ReferencesThe designer i
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stream stabilization needs totaling
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causes and modes of failure act tog
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(permissive velocity) and/or bounda
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Re-run the model after coding in th
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Step 2 - Develop and Screen Alterna
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Cost. The design must be cost effec
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Step 3 - Develop Concept Plan and D
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Legally it is up to the applicant t
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e necessary, as well as other work
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(0.6-0.9 m)(0.6-0.9 m)(152-203 mm)L
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(1.2 m)(1.2 m)(12 mm to 51 mm)(1.5
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(0.9 m)(0.6 m x 0.6 m x 914 mm)(457
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(0.6 - 0.9 m)Vegetated GeogridDrain
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Planted Rip RapDrainage Design Manu
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A-JacksDrainage Design ManualCity &
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(1.5 m)(13 to 25 mm)(0.6 to 0.9 m)R
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(13 - 25 mm)(0.6 to 0.9 m)Planted G
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(2.4 m)(2.4 m)Flow DeflectorsDraina
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performance. This technique require
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Boulder ClustersDrainage Design Man
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of a bend, and filled around and on
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horizontal line are SI (metric) nam
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GRADING OF ROCK SLOPE PROTECTION PE
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A layer of Backing No. 1 or No. 2 i
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SECTION 7.0DESIGN OF CONDUITS, CULV
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7.2.3 Storm Drain Location and Alig
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In paved areas, pipe cover shall be
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• Drop inlets shall be spaced suc
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Marine Fisheries Service NMFS South
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For all intermediate channels, eith
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7.4.8 Easements for Closed Conduits
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SECTION 9.0STORMWATER MANAGEMENT FA
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Detention for the 10-year design st
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9.2.1 Provisions For SedimentationT
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9.5 Basin DesignDetention and reten
Page 151 and 152: mm (24 in). A corrugated metal pipe
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Page 155 and 156: SECTION 10.0EROSION CONTROL AND STO
Page 157 and 158: 10.3.1 Gravel Construction Entrance
Page 159 and 160: Notes:1. PLACE BALES PERPENDICULAR
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Page 163 and 164: SEED MIX ONE(Application rate = 40
Page 165 and 166: • Description of soils, geology,
Page 167 and 168: • The facilities shown on this pl
Page 169 and 170: The following control measures are
Page 171 and 172: BMP 3 Dewatering OperationsI. Defin
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Page 175 and 176: D. All vehicles/equipment that regu
Page 177 and 178: I. Properly dispose of or recycle u
Page 179 and 180: BMP 12 Solid Waste ManagementI. Def
Page 181 and 182: H. Temporary washout facilities sha
Page 183 and 184: SECTION 11.0RIPARIAN REVEGETATION P
Page 185 and 186: per second (6 feet per second). Whi
Page 187 and 188: TABLE 11-2: WOODY SHRUBS FOR SAN LU
Page 189 and 190: TABLE 11-4: GRASSES AND HERBSFOR SA
Page 191 and 192: TABLE 11-5: MARSH PLANTS FOR SAN LU
Page 193 and 194: 11.4 Planting Site Considerations11
Page 195 and 196: Where vandalism is not a problem, t
Page 197 and 198: Table 11-6Recommended Species Compo
Page 199 and 200: Larger Crown TreesPlant in clusters
Page 201: plant materials (often one growing
Page 205 and 206: Step 4: Select plants suitable for
Page 207 and 208: • Exotic vegetation on the site s
Page 209 and 210: • Removal of Exotic VegetationThe
Page 211 and 212: Placement of weed control fabric or
Page 213 and 214: 11.12 Erosion Control SeedingRevege
Page 215 and 216: y wind or water runoff; should be e
Page 217 and 218: Abrasion. Removal of streambank soi
Page 219 and 220: Confluence. A junction of streams o
Page 221 and 222: Flood. A general and temporary cond
Page 223 and 224: Left Bank. The left-hand bank of st
Page 225 and 226: Shear stress. The force per unit ar
Page 227 and 228: Velocity (of water in a stream). Th
Page 229 and 230: Association of Bay Area Governments
Page 231 and 232: Hoover, Robert F. 1970. The Vascula
Page 233 and 234: U.S. Army Corps of Engineers, April
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Drainage Design Manual - the City of San Luis Obispo

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