# Month: July 2013

## EPA國立雨水計算器

### EPA國立雨水計算器

EPA的國家雨水計算器是一個桌面應用程序，估計每年雨水量和頻率的徑流來自特定網站在美國的任何地方。估計是基於當地的土壤條件，土地覆蓋，與歷史雨量紀錄。  計算器訪問幾個國家數據庫提供了土壤，地形，雨量，蒸發選址信息。用戶提供網站的土地覆蓋信息，並選擇低影響開發（LID）控制的類型，他們想用

 EPA全國雨水計算器圖形用戶界面

via Blogger http://www.swmm5.net/2013/07/epa.html

## EPA Calculadora Nacional de Aguas Pluviales

### EPA Calculadora Nacional de Aguas Pluviales

Publicado hoy por la EPA (Dr. Lewis Rossman) es un EE.UU. Nacional de Aguas Pluviales Calculadora

Aquí está una nueva herramienta, basada en SWMM, que pueden ser

## Meaning of a Node Continuity Error of 100 Percent in SWMM 5

Note:  A continuity error of 100 percent for some nodes in SWMM5 simply means that the total lateral flow and total inflow from the upstream links and the outflow to

## St. Venant Terms in SWMM 5 and how they change for Force Mains

Note:  An explanation of the four StVenant Terms in SWMM 5 and how they change for Force Mains.  The HGL is the water surface elevation in the upstream and downstream

## SWMM 5 Aquifer has a Saturated and Unsaturated Zone

Note:  The unsaturated upper zone soil moisture varies between the initial upper zone moisture fraction to the porosity fraction for the soil.  The soil moisture content is for the SWMM5 Aquifer which

## InfoSWMM and H2oMAP SWMM Output Statistics Manager

Note:  You can use the Output Statistics Manager in InfoSWMM and H2OMAP SWMM to compute the mean and maximum peak flow for ALL of the links or the mean and maximum depths of

## SWMM5 Runoff and Depth Relationships

Note:  The surface runoff is a non linear function of the independent depth in both the pervious and impervious areas of the subcatchments.   No surface runoff occurs until the depth over either the

## InfoSWMM and H2OMap SWMM Batch Simulation Manager

Note:  How to load Scenario Output into the Report Manager of H2OMAP SWMM and InfoSWMM after they have been run in a Batch File.

## How to Make a New Project INI file for InfoSewer

Note:  How to Make a New Project INI file for InfoSewer
Step 1: Make a new InfoSewer Project as a New Empty Map and use the

## InfoSWMM and H2oMAP SWMM Map of the Maximum Surcharge Depth Over Highest Pipe Crown

Note:  You can copy and paste information from the Junction Output Summary to a newly created Junction Information DB Column so that you can use Map Display to visually see the newly saved

## SWMM5 Groundwater Flow Components

Note:  There are three sub flow components in the calculation of the groundwater flow from a SWMM 5 Subcatchment.

1st ComponentFlow = Groundwater Flow Coef. * (LowerDepth – Aquifer Bottom

## SWMM 5 Subcatchment Runoff and Depth Relationship

Note:  The surface runoff is a non linear function of the independent depth in both the pervious and impervious areas of the subcatchments.   No surface runoff occurs until the depthover either the

## There are Three Types of Surfaces in each Subcatchment of SWMM 5

Note:  There are Three Types of Surfaces in each Subcatchment of SWMM 5.  The overall depth in a subcatchment is the weighted average of the impervious without depression storage area, the impervious

## The total flow from a Subcatchment in SWMM 5

Note:  The total flow from a Subcatchment is the sum of the flow from the impervious area with and without depression storage and the pervious area with depression strorage.  The same width,

## Link Depth and Node Depth Relationship in SWMM 5

Note:  The depth in a manhole or node in SWMM 5 can be higher than the depth in the connecting links if the link is surcharged.  Typically the upstream link depth is equal …

## Simulating a Blocked Pipe in SWMM 5 and InfoSWMM

Note:  For example, you can use the Simulation Elapsed time as the Premise and a complete closure of the orifice as the action to simulate a blockage in a portion of

## Average Number of Node Iterations in SWMM 5 Dynamic Wave Saolution

Subject:  SWMM 5 will iterate for the new node depth at each time for a minimum of 2 iterations to a maximum of 8 iterations based on the Node Continuity equation.  If

## Export from WeatherUnderground using the CSV File Export Option to InfoSWMM

Note:  Export from WeatherUnderground using the CSV File Export Option to InfoSWMM

Weather Underground is a site that provides excellent local weather information in the form of graphs, tables and csv files. You

## Create Watersheds Using InfoSWMM Subcatchment Manager

Subject:  Create Watersheds Using InfoSWMM Subcatchment Manager

The Subcatchment Manager of InfoSWMM will  help calculate most of the  physical parameters associated with a Watershed or Subcatchment in SWMM 5 from a Digital Elevation

## Display Feature Options for InfoSewer and InfoSWMM

Display Feature Options for InfoSewer and InfoSWMM

Or, how to manage your active and inactive network in a scenario

 Display Feature Options for InfoSewer and InfoSWMM

## How to Make a New Geodatabase for InfoSWMM and InfoSewer in Arc Map

How to Make a New Geodatabase for InfoSWMM and InfoSewer in Arc Map
 How to Make a New Geodatabase for InfoSWMM and InfoSewer in Arc Map

## Graphical Representation of Results in InfoSWWM and H2OMap SWMM

If you are graphing from the attribute browser you are restricted to 24 hours.

If you are using the report manager  then you select the graphing by changing the From and To dates.  …

## SWMM 5 Link Time Step Calculations

SWMM 5 Link Time Step Calculations
It you select the variable time step option in SWMM 5 then the program will compute the CFL time