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I currently running Topsurv v7.5 on a Topcon GRS-1 and I was wandering if any one knew a way to minimize Topsurv and open other programs?

Check out the link below. This is a paper done by Tony Wahl with USBR in 1998 that details several of the embankment dam breach equations...

Sorry... of a foot.

Within a couple tenths would be satisfactory.

We're looking to upgrade from our antiquatated Trimble 4800 gps system to something more modern and I was wandering if anyone had suggestions. I am interested in either a Trimble or Tocon unit with a cellular modem but other than that I am kinda lost on what I really need. The primary use of...

The steel plate will initially act as a sharp crested weir and then should transition to an orifice flow above the top of the pipe.

See "Hydraulics Formula" at the bottom of the page

I use a program from NRCS called Hydraulics for a lot of typical calculations such as riser and conduit, hooded inlets, etc. It is available for download at: http://www.il.nrcs.usda.gov/technical/engineer/engsprdshts.html

Not sure what you are asking? Depth of flow at a given Q, like with Mannings Eq. or what?

When modeling trapezoidal earthen emergency spillways for dams in HydroCad, I generally use the following spreadsheet (http://www.mde.state.md.us/assets/document/damsafety/DambreakGuidelines/Spreadsheets/Hydraulics/SPILLWAY.XLS) developed by the Maryland Department of Dam safety and import a...

In reality you are dealing with two different monsters: the SCS method was developed based on only a few watersheds and the results of the method are based on the predefined rainfall distribution (i.e. Type II, III, etc.), the standard or modified unit hydrograph you are using, CN, and the time...

Sorry but I don't, I have very little experience with HMS and stray away from it as much as possible. It still has lots of bugs and little kinks that are a pain to deal with.

Be sure and move the black and white center point directly over the node and just left click. I am using HEC-RAS 4.0 and it has worked multiple times.

I just recently got HEC-RAS to work with an existing reach by going to the edit menu and selecting move object and moving the center of the storage area over the upstream node of the reach and then clicking that upstream node and it gave me the prompt.

HEC-RAS seems to have a glitch in this area. You have to create the storage area first in your geometry and then create the reach and HEC-RAS will prompt you to connect the two.

The capacity of the old pipe system is likely somewhere around 75-100 cfs.

Why would you need survey control inside/on top of a building?

I got lost in all the responses, but the first thing you should do is to check with the state dam safety office and determine what criteria they require for the design of dams. Also, the temporal distribution of the rainfall can have a large effect on the resulting hydrograph. The emergency...

You should also check with your state registration board for surveyors as they may have some minimum standards for surveys!!