gis-l: Shapefile of Mean High Water Line needed: Compilation

Reynolds, Keith Keith.Reynolds at dep.state.fl.us
Tue May 11 10:57:17 EDT 2010


Thanks to everyone who responded to my request for a shapefile that depicts the Mean High Water Line for the west  coast of Florida.

Special thanks to Brian Shoaf who contacted Gary Cook on my behalf.

All responses provided a wealth of practical information and I was able to use the shapefile referenced in a link sent by Gary Cook.

The following is a compilation of responses:

Gary Cook, DEP

Don't know how your search is going but I sent you a shapefile of where Erosion Control Lines have been set.  These will be where ever a beach nourishment has been done and indicates the MHW before the sand was added.
I also have a MHW published by NOAA it might serve your purpose although it's not accurate enough for our surveying crews to use.
Attaching both shapefile went over the allowable size limit so the NOAA file will be on the next one.

Link to NOAA shapefile: \\publicfiles.dep.state.fl.us\dwrm\beaches\transfer<file:///\\publicfiles.dep.state.fl.us\dwrm\beaches\transfer>



Brian Clark, FGS                Brian forwarded a method for deriving MHW from LIDAR which I am sure he will be happy to share with others

I am not aware of a preexisting shapefile for mean high water, but I would be interested to know if one does exist. I'm currently working on a project in some of the panhandle coastal areas where we need to derive MHW and we're using LiDAR. If you can't find a shapefile, I would suggest a combination of deriving the corresponding elevation from LiDAR and verifying / rectifying it with aerial imagery. If you'd like any info on how we're doing this, please let me know.

Aparna Bokey, DEP

The Mean High Water data is maintained by the Division of State Lands, Bureau of Mapping and Surveying. Please visit their website: www.labins.org<http://www.labins.org>
You may also contact the DSL GIS Coordinator - Tim Patterson  tim.patterson at dep.state.fl.us<mailto:tim.patterson at dep.state.fl.us>


Diana Umpierre, SFWMD

                I receive copies of the FDEP's GIS digest here at SFWMD for informational purposes. For this particular post, I think I have some info that can help. I hope you don't mind I replied directly to you, rather than the listserv. If you haven't received a response yet within FDEP, or NOAA, on your specific MHW shp Q, I highly recommend you contact one of the NOAA Digital Coast GIS contacts below.
Brian.Hadley at noaa.gov<mailto:Brian.Hadley at noaa.gov>
Doug.Marcy at noaa.gov<mailto:Doug.Marcy at noaa.gov>
Gerald.Hovis at noaa.gov<mailto:Gerald.Hovis at noaa.gov>

In the meantime, I don't know if you already checked this website, but it's possible it has the shoreline you need.
http://historicalcharts.noaa.gov/cm_vs/cm_vs_query.asp, refer to Download Merged Vector Shoreline (55MB), which is the "charted" Mean High Water line (not MHHW).

The contacts above have been helping our region in support of sea level rise mapping. I have cc'ed Richard at FDEM as he is aware of the efforts we are doing down here. Other relevant info that I don't know if needed, but NOAA just recently released tidal transformation grids for all of coastal Florida and includes the gulf coast.  http://vdatum.noaa.gov/about/availability.html

If there is a need for topo DEMs from our coastal counties, let us know. We have them from Lee, Collier, Monroe, Florida Keys, Miami-Dade up to Palm Beach. Some are already posted in our website, others could be provided as provisional, if the need arises.
http://my.sfwmd.gov/gisapps/sfwmdxwebdc/dataview.asp? - seach by keyword FDEM

I hope this helped.  I'll be in the office Monday and will be checking email periodically tomorrow.

Thanks to all!

Sincerely,

Keith



Keith Reynolds
Environmental Specialist II, GIS Tech
Florida Dept. of Environmental Protection, SW District
13051 N. Telecom Parkway
Temple Terrace, FL  33637-0926
(813) 632-7600 x487



The Department of Environmental Protection values your feedback as a customer. DEP Secretary Michael W. Sole is committed to continuously assessing and improving the level and quality of services provided to you. Please take a few minutes to comment on the quality of service you received. Simply click on this link to the DEP Customer Survey<http://survey.dep.state.fl.us/?refemail=Keith.Reynolds@dep.state.fl.us>. Thank you in advance for completing the survey.
From: Reynolds, Keith
Sent: Friday, May 07, 2010 12:44 PM
To: 'gis-l at lists.dep.state.fl.us'
Subject: Shapefile of Mean High Water Line needed

I am in need of a shapefile which depicts the Mean High Water Line for the west coast of Florida, Hernando County to Collier County.

Thanks in advance,

Keith

Keith Reynolds
Environmental Specialist II, GIS Tech
Florida Dept. of Environmental Protection, SW District
13051 N. Telecom Parkway
Temple Terrace, FL  33637-0926
(813) 632-7600 x487

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.dep.state.fl.us/pipermail/gis-l/attachments/20100511/c12c469d/attachment-0001.htm


More information about the GIS-L mailing list