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Hi All,

I am with Jason on this one.  Making a unique ID that includes some location description just adds another element to manage in your database one feature at a time.

I think it is useful to have another field with something like the basin ID, but I wouldn't rely on it as part of the unique ID.  That way you can just apply the basin ID to all the points within that basin all at once.  If you have to change it on individual features it just gets messy when you have to edit a catchment boundary or something.  If you have 1000 DMHs and CBs spread across 10 basins, I would recommend numbering them 1-1000, and keeping the basin ID separate.  Then you can still quickly query basins by the other field (or symbolize), but your labels are shorter because you don't need to have the prefix representing the basin.  And if you DO want to label with the basin, your labeling expression can be:    [basin]&"_"&[ID]

I also stay away from the prefixes CB, DMH, SMH for the same reason: you can symbolize your maps to indicate whether something is a manhole or a catch basin, so adding the prefix "SMH_" or "CB_" before every number doesn't really help, it just makes your labels longer.

Jeff


On Wed, Aug 3, 2016 at 4:03 PM, Brett R. Horr <[log in to unmask]> wrote:

+2.

We use a meaningful hydro feature name that is adjacent to or a part of the system like Long Beach (LB) or Bridges Swamp (BS) as the prefix and then start increasing the numbers as one moves away from the outfall.

Brett Horr, GISP
Director of GIS and Technology
Town of York
186 York Street
York, Maine 03909-1314
(207) 363-1007x243
http://www.yorkmaine.org/

From: Northeast Arc Users Group [mailto:[log in to unmask]] On Behalf Of Lynne Fielding
Sent: Wednesday, August 03, 2016 3:57 PM
To: [log in to unmask]<mailto:[log in to unmask]>
Subject: Re: Stormwater Feature Numbering

Hi All

For what it’s worth I advocate for a numbering schema that means something (ie DCB_xxx, SMH_xxx) and here in Westwood the numbering itself relates to the location in town they are…..sewer mini-systems or catchments, which really helps when you’re trying to find it/them. I’ve worked with the other way and those numbers are illogical and get really big and then just try to label your map! Having a layer that shows where the ‘catchments’ are helps too.

My two cents before I retire ☺……………………

Lynne W Fielding GISP
GIS Specialist
IT Dept
Town of Westwood
781-320-1082

From: Northeast Arc Users Group [mailto:[log in to unmask]] On Behalf Of Jason Wise
Sent: Wednesday, August 03, 2016 3:48 PM
To: [log in to unmask]<mailto:[log in to unmask]>
Subject: Re: Stormwater Feature Numbering

I'm a big fan of unique IDs that don't mean anything.  If you have 1,000 catchbasins, call the next one 1001, regardless of where it is.  If it's in a GIS, the number doesn't need to tell you where it is.

Your boss will hate this idea, so of course you'll have to come up with some kind of watershed-based system.
________________________________
From: Gambrel, Sean<mailto:[log in to unmask]>
Sent: ‎8/‎3/‎2016 11:36 AM
To: [log in to unmask]<mailto:[log in to unmask]>
Subject: Stormwater Feature Numbering
Hello all,

Here in Bangor  we’ve had our stormwater infrastructure in GIS for some time, but currently use a grid-based numbering system which is not particularly useful for anyone.  We’re considering a switch, as we have not done a significant amount of asset management on stormwater yet and the current system is quite confusing for our field crews.  Looking ahead, toward more asset management work, we’d like to have a better system in place.

Our sanitary sewer system is numbered like a branching tree, with a two letter prefix denoting subsection and a three number pipe id number, which are divided into branches by 100s / 10s as necessary.  So for instance AB123.  This system works well for us, but unfortunately can’t easily be replicated for our stormwater system because it is discontiguous in nature.

Our current grid-based system is more-or-less arbitrary, but includes the complication of using a grid which is otherwise unreferenced elsewhere in the city.  This is creating many headaches and conflicts among staff.

Would you be willing to share what your community is using for stormwater numbering and what the pros and cons have been in using this numbering system?

Thank you very much,
Sean


Sean Gambrel, GISP
GIS Administrator
Addressing Officer

City of Bangor, Maine
207-992-4245
[log in to unmask]<mailto:[log in to unmask]>

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