• Instability Results Modeling Interconnected Ponds with Outside Control Structure

    Hi, I’m trying to model two (interconnected ponds as show in the figure below. The whole catchment area will discharge into Pond-1, and then into Pond-2. The client has specifically requested to provide the control structure for runoff mitigation…
  • how to reduce continuity error in specific pond from model?

    I have run my model and received a very high continuity error in a specific pond in my model. My pond is going to an outlet structure and then an oufall somewhere else in the model is using that pond for a boundary condition. When i plot HGL, flow in…
  • Void Space Values other than 100%

    Hi, After validating a model before running it I found another error as stated below: "The SWMM engine does not support Void Space values other than 100 percent. Alternate values are ignored." I zoomed into it and it went to a pond and I tried…
  • Composite outlet structure for Ponds

    When doing a new composite outlet structure with orfice and weir, does the rating table information need to be something that is put in prior to running the model? or is the rating table and curve table populated after running the model? I am updating…
  • How does "constant flow" for pond seepage method?

    Hi, I was wondering if I did the "constant flow" method does the pond need to be using Elevation-Area or one of the other options under the volume type that are available? Also i am aware that the solver should be implicit or the GVF-Rational (StormCAD…
  • Multiple Pond Model with Reverse Overflow

    I've never had to do multiple pond modeling. So this is a first for me. I actually have a couple questions. 1. How do you connect a pond outlet to an Inlet (All of these will be risers)? (Pond 5 needs to overflow into the system using DA-3) . (Pond…
  • Where is the Pond Routing Calculations (Total Out) report?

    I am trying to generate a report from Pond Pack (CONNECT Edition Update 2) called Pond Routing Calculations (Total Out), see attached image. I cannot find the report anywhere in the report builder. Can anyone point me in the right direction? I tried recreating…
  • Pond Outlets - CivilStorm vs. PondPack

    Hi. I typically use PondPack for pond modeling, but have been working more with CivilStorm lately.I have noticed that the pond outlet control structure (P.O.E.) is included in the link in PondPack and conversely the pond outlet control structure included…
  • Receiving Different HGL Results when switching from Elev-Area to Elev-Volume Curve in a Pond (CivilStorm)

    Good afternoon, I am working on a combined sewer network routing model. As part of the model, I have two proposed ponds (forebay and main wetland). I have found that my maximum HGL results in the ponds are different when I switch from Elevation-Area…
  • RE: StormCAD: Pond will not function, Flow and Depth do not change with different storms

    Hello LeeFricke, The pond element is new to StormCAD as of SELECTseries 3 and operates a bit differently than it does with our products (or solvers) that route hydrographs. Since StormCAD uses a peak flow, steady state analysis, you are only looking…
  • Re: Civil Storm Model Computation Error

    Hello Alex, Do you happen to have any manholes in your model with the structure type set to "transition"? If so, the memory error you're encountering is a known issue related to that. A patch is available for CivilStorm 08.11.02.62, which you can obtain…
  • Re: Pond curve elevation-volume in CivilStorm

    Hello Leonard, I am a bit unclear on your questions, but I will talk about a few things that I think might be relevant. First, there have been three major new releases of CivilStorm since version 08.09.26.17. The latest one is 08.11.02.62, and is…
  • Re: PondPack V8i - Orifices in series??

    Hello Josh, Yes, Pondpack can model orifices in series. Since you had also submitted your question to technical support, I took a look at your model and diagram and found the problem.Basically you need to have the 7" orifice and "upstream culvert…
  • PondPack V8i: Time vs. Elevation

    When modeling a simple pond with free outfall, PondPack produces a time vs. elevation report for the pond. When modeling a pond with a TW-Elev curve at the outfall, PondPack does not produce a time vs. elevation report for the pond. How do I get the time…
  • WaterCAD for Reclaimed Water

    Any suggestions on how to model a reclaimed water system that delivers water to multiple (bulk) storage ponds? Each pond has a level control and a pressure staining valve. Is there a way to simplify this model, I can't justify trying to model all the…
  • Ponds in series?

    I'm new to PondPack V8i but was fairly familiar with PondPack 10. Here's what I need to do: I'm modeling a large basin draining to a proposed culvert that I'm modeling as a pond to see how high the headwater will reach. I have a small basin (developed…
  • POND PACK INSTALLATION ISSUE

    I am trying to install Pond Pack by pondpack.msi I am getting an error message which terminates installation: "1: The InstallScript engine is missing from this machine. If available, please run ISScript.msi, or contact your support personnel for…
  • Using CivilStorm, StormCad and PondPack with InRoads and Microstation

    Working a roadway project including multiple pipe networks, detention basins, infiltration basins, channels, and culverts. Need to streamline the hydraulic and hydrologic analysis. Using Power InRoads V8i for site/roadway design. Considering using CivilStorm…
  • PondPack: Error: Number out of range

    Error Message: "Number out of range. Looking for value that is less than lowest table value. Looking for 57.688 ft. Lowest table value 58.000 ft." I can't find the setting which is making this model look for elevation 57.688. There is a composite outlet…
  • Modeling Mulitple Ponds in Series

    I'm trying to model a set of small ponds each connected in series. The ponds recieve water from their respective drainage basins, and from water overtopping or seeping from the upstream ponds. The ponds would overtop through a weir after achieving max…
  • Re: Problem modeling pond outlet structure - SewerGEMS

    Hello Jason, SewerGEMS computes a EQTW table for the pond outlet structure, which is used to determine the outflow for a given headwater and tailwater. So, the tailwater from the conduit should be accounted for. If the grates in your outlet structure…
  • PondPack: Varying the Time-Elevation Curve at an Outfall

    What is the best way to model a different time-elevation curve at an outfall for each different storm event? PondPack V8i
  • PondPack V8i question

    I've used pondpack for many years but am new to V8i. I keep getting the following error message: -1 "Predeveloped" "Pond" "44" "Basin 1" (N/A) "The pond elevation column needs to be entered in ascending order." Precalculation It appears that my…
  • Re: stage discharge for a pond

    Yes, the stage-discharge table can be entered as a user-defined rating curve in a composite outlet structure connected to a pond. The stage-storage would be entered in the pond itself, by selecting elevation-volume as the pond volume type.
  • Re: PondPack - Outlet Control Structures

    See below thread: http://communities.bentley.com/products/hydraulics___hydrology/f/5925/t/64355.aspx The riser component has a built-in weir, so there is no need to enter a separate weir component in your outlet structure. When water spills over…