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==R==
 
==R==
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*<span title="The Rational Method is a simple hydrologic calculation of peak flow based on drainage area, rainfall intensity, and a non-dimensional runoff coefficient. The peak flow is calculated as the rainfall intensity in inches per hour multiplied by the runoff coefficient and the drainage area in acres. The peak flow, Q, is calculated in cubic feet per second (cfs) as Q = CiA where C is the runoff coefficient, i is the rainfall intensity, and A is the drainage area. A conversion factor of 1.008 is necessary to convert acre-inches per hour to cfs, but this is typically not used. This method is best used only for simple approximations of peak flow from small watersheds."> '''Rationale Method'''</span>
 
*<span title="Loose stone used to form a foundation for a breakwater to reduce potential for soil erosion."> '''riprap'''</span>
 
*<span title="Loose stone used to form a foundation for a breakwater to reduce potential for soil erosion."> '''riprap'''</span>
 
*<span =title"Riprap is a permanent layer of large, angular stone, cobbles, or boulders that is typically used to armor, stabilize, and protect the soil surface against erosion and scour in areas of concentrated flow or wave energy."> [https://stormwater.pca.state.mn.us/index.php?title=Erosion_prevention_practices_-_Riprap '''riprap''']</span>
 
*<span =title"Riprap is a permanent layer of large, angular stone, cobbles, or boulders that is typically used to armor, stabilize, and protect the soil surface against erosion and scour in areas of concentrated flow or wave energy."> [https://stormwater.pca.state.mn.us/index.php?title=Erosion_prevention_practices_-_Riprap '''riprap''']</span>

Revision as of 18:46, 30 May 2019

This page lists standard definitions used in hover boxes throughout this manual. Hover boxes allow the user to hover over bolded text and see a definition for that text.

A

  • arterial roads
  • alum

B

  • baffle
  • bank stabilization
  • best management practice
  • biofiltration
  • bioinfiltration
  • bioretention practice
  • Bioswale
  • brownfield
  • Brushing
  • buffer zones
  • bypass flow

C

  • catch basin
  • catchment
  • cistern
  • clay
  • coagulation
  • coarse sediment
  • collector roadway
  • concentrated flow
  • concentrated stormwater runoff
  • conventional roof
  • curb-cut
  • curb bump-out

D

E

F

  • filter fabric
  • filtration
  • filter strip
  • first flush
  • flash
  • floatables
  • flocculant
  • flocculation
  • flow paths
  • flow-through device
  • fluvial systems
  • footprint
  • forebay
  • fractured flow

G

  • grade
  • grade control structures
  • green roof
  • green space
  • geotextile
  • gross solids

H

  • herbaceous perennial
  • highly urban and ultra-urban environments
  • hydraulic conductivity of the aquifer material (k),
  • hydraulic grade line
  • hydraulic gradient (i),
  • hydraulic model
  • hydrodynamic separator
  • hydrogeology

I

J

K

L

  • large lot residential
  • level spreader
  • live storage
  • longitudinal slope
  • low permeability soils

M

  • manhole
  • media
  • mesic
  • moderate to steep slopes
  • MS4 (Municipal Separate Storm Sewer System)
  • mulching

N

O

  • outfall

P

Q

R

  • Rationale Method
  • riprap
  • riprap
  • rock armored
  • rock riffle

S

T

U

  • highly urban and ultra-urban environments
  • underdrain

V

W

X

Y

Z