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Login     FAQ     Search     Post    Conferences General Discussion Area   Discussion Topic Author Last Updated Date/Author Replies Views Setting HGL Elevations My client has asked me to evaluate our HYDRA model using two different storms - one storm will be used for the downstream section of the model, and ... echambe Dec-28-09 07:18 AM by echambe 0 199   existing pumps I am modeling an existing system and will use it to model build out. For the pump parameters I have used the maximum discharge rate provided by the ... sbergeron Feb-03-09 12:49 PM by Allen Peyser 1 536   SE_Area exceeds maximum I have a few areas that are being modeled for buildout that exceeds the maximum allowed value(500)...will this have any effect on the flo file I c... sbergeron Dec-31-08 04:24 PM by Allen Peyser 1 739   Measuring surcharge in manholes How can I run a query to find out the level of surcharge in a manhole? I have pipes that are surcharging but the manholes are rather deep so I ... sbergeron Dec-11-08 12:36 PM by Allen Peyser 2 947   Using HYDRA's SWMM module with EPA SWMM v5 The question has come up recently of how to using the .DAT file created by HYDRA's SWMM module with EPA SWMM version 5, which requires a .INP file... HelpDesk Aug-04-08 01:24 PM by HelpDesk 0 2034   runoff modeling I have a subdivision site with a fairly uniform slope and no existing transport units ie. channels etc. How do you model this to get pre developed run... johnlake Jul-09-08 05:42 PM by Allen Peyser 2 1997   sewer vacuum system? Does anyone have experience with Sewer Vacuum System modeling? Just start a new master plan with sewer vaccum system (approximately 150 acres)%2... QiaozhiL Jul-09-08 05:24 PM by Allen Peyser 1 1420   SCS Method: TR-55 vs Santa Barbara Recently a customer compared the hydraulic analysis results of HYDRA's SCS Method to the SCS Method of another modeling program, which uses the TR... Cindy Peyser Aug-30-07 02:05 PM by Cindy Peyser 0 3114   Diurnal Patterns I was just wondering if any users have any diurnals patterns they wish to share. In particular, I am trying to find diurnal patterns for element... Jeff Jul-11-07 01:55 PM by Cindy Peyser 3 1970   inflow (sto_area) and rapid infiltration (rap_area) I have created a model (monster) with 10K entities in HYDRA for an entire town using record sewer plans and am now in the process of calibrating t... Aquaman Jun-26-07 09:18 AM by Cindy Peyser 3 1504   Storm water modeling Can Hydra be used to design storm water detention/retention ponds? Thanks, Gary... gellis Mar-08-07 01:43 PM by gellis 5 2418   Landuse Polygon within a Polygon Hello, I am using a shape file consisting landuse polygons to create the HYDRA landuse layer (using GIS Layer Wizard). There are some polyg... SP Nov-30-06 10:34 AM by PPiedra 1 1332   Pump Output using Peaking Factor Method Hello, I am using the peaking factor method (SAN PEA setting) to predict the peak flows. I am also using the ADD VOL setting. The model has... SP Sep-26-06 03:57 PM by Allen Peyser 2 1511   SanPop Hello, The SanPop field in the Analysis Results tab does not register a population for my simulation. The only populations in the model are throu... astaples Aug-18-06 11:32 AM by Allen Peyser 3 1495   SELU Interesect Hello, I am using the LU > SE (Landuse interesected with Service Area) feature to generate flow file for my model. I have Residential and... SP Aug-11-06 09:14 AM by Cindy Peyser 7 1693   Using Hydra with dual monitors I am using Windows XP Version 2002 with a NVIDIA multiview monitor. If I disable one of the monitors Hydra opens and runs normally. If I enable both... jlsmith May-09-06 08:50 AM by Allen Peyser 5 1682   Hanging Wall Stilling Basin Being new to this program, I'm not sure how I would even input the info to analyze this structrue. When working with a jurisdiction, they have ... formula23 Mar-29-06 11:51 AM by Allen Peyser 2 1569   Response to WE&T "Sewer Simulations" article The following letter has been submitted to the editor of the Water Environment Federation magazine Water Environment & Technology (WE&T). %... Cindy Peyser Mar-23-06 10:55 AM by Cindy Peyser 3 1889   overflow volumes How can I use my Hydra sewer model to estimate how much sewage is overflowing during large storms? There are at least 3 to 5 manholes where the HGL ... jstock Mar-23-06 10:22 AM by Cindy Peyser 6 1878   Anyone converted data from SANSYS to HYDRA? I'm trying to convert a sanitary sewer system from SANSYS to HYDRA and I'm having trouble with the Pizer Layer Wizard. I can't seem to import th... mike80 Dec-07-05 01:31 PM by Cindy Peyser 16 2229   INF command application problem Hello, The reason of this post is that I’m having this problem when applying the infiltration command. We are currently working on a mod... cjcuervo Nov-29-05 08:59 AM by Cindy Peyser 2 1554   INF and PRO commands INF: I tried to employ the opcion of the INF command that allows to enter the infiltration parameter expressed as liters per mm of diameter per ki... PPiedra Aug-31-05 09:19 AM by Allen Peyser 9 2141   HGL - Flat Pipes When Hydra calculates the HGL for flat pipes, very mild sloped pipes, under capacity pipes and negative slope pipes that are not under the influen... Runoff Aug-14-05 10:31 AM by Allen Peyser 2 1757   Some tips for users of PCSWMM To run Extran module under PCSWMM, it is necessary to do the following minor adjustments to the “.DAT” files generated by HY... PPiedra Jun-21-05 11:46 AM by PPiedra 0 1626   How can you control maximum velocity in design pipes? Here is a question that has been asked by a new Hydra user: In the Hydra 6.3 software ¿how can we control the design velocity at a maximum v... Cindy Peyser Jun-21-05 10:45 AM by Cindy Peyser 3 1735   Infiltration I noticed on my hydrographs that there is a diurnal curve applied to my infiltration that appears to be 180 out of sync with the diurnal curve of my w... PatriceM May-17-05 10:58 AM by Cindy Peyser 2 1642   Trench Side Slope Command - new Breakheight parameter In the Hydra 6.3.033 / 6.3.10.12 release there is an option to set a Breakheight parameter in the TSL - Trench Side Slope Command. See attached dia... Cindy Peyser Mar-29-05 01:48 PM by Cindy Peyser 0 1777   Dynamic Hydraulic Sewer Model Calibration What are the essential steps to successfully calibrate a dynamic hydraulic sewer model? ... environcivil Mar-21-05 03:41 PM by Allen Peyser 3 48   Pump Station Outputs Everyone: heres Allen's Peysers comments on my last post. #1) It makes sense that the PUM_IntakeElev = 0. According to the Hydra man... muzface Mar-14-05 09:49 AM by Allen Peyser 1 1839   hydragraphs In an existing pipe I noticed that AverageFlow and the DesignQ in the output dialog box are the same as the values provided on the Hydragraph. This m... muzface Mar-13-05 03:29 PM by Allen Peyser 4 1914

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