[datameet] Request for surface water quality data for INDIA

[N Satish]

Dear all,
Where can I get water-quality data, specifically chlorophyll data, for
INDIAN SURFACE WATER BODIES?

Thanks and Regards
N. Satish
SRF, at BITS, Pilani, Hyderabad Campus

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[datameet] Rivers of India shape files

[Vaidya]

Hello,

Has anyone got the shapefiles for IndaWris river basins map?
https://indiawris.gov.in/wris/#/riverBasins
More than the basins, trying to find the map of rivers themselves.

Thanks,
Vaidya

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Re: [datameet] Converting maps in pdfs to actual shapefiles/geojsons

[Vaidya]

BWSSB line files in kml format have been hosted on Opencity (along with
original pdf) for anyone who wants to download:
Water line maps:
https://data.opencity.in/dataset/bwssb-water-supply-lines-map-of-bengaluru
Sewerage line maps:
https://data.opencity.in/dataset/bwssb-sewerage-line-maps-for-bengaluru

Thanks,
Vaidya


On Wed, Nov 30, 2022 at 4:30 PM Vaidya  wrote:

> Thanks Nikhil.
> This worked beautifully!
>
> -Vaidya
>
> On Wed, Nov 30, 2022 at 1:02 PM Nikhil VJ  wrote:
>
>> Hi Vaidya,
>>
>> You might be able to skip the manual tracing process that Devdatta linked
>> to 
>> and pull out vectors directly, if your PDFs are made that way.
>>
>> Rajesvari Parasa  has successfully
>> turned Delhi development plan's PDF into shapefiles.
>>
>> You can read the discussion about it here:
>> https://groups.google.com/g/datameet/c/37uN8xnWrK0/m/2axI7AB-AQAJ
>>
>> Relevant snippet:
>>
>> 1. Extracting from PDF
>> - It's one of those PDFs exported from Autocad or so where you can see
>> multi-layers and turn them on or off.
>> - Rajesvari used a command-line GIS tool called "ogr2ogr" to extract
>> individual layers from the PDF into .geojson shapefiles.
>> - There was a tricky bit where the output lat-longs were all like
>> (716882.20,3166456.28) - a different CRS and we didn't know which.
>> - I used http://projfinder.com/ to find it, then Rajesvari included CRS
>> conversion into the ogr2ogr commands to produce proper shapefiles.
>> - You can see all that in this repo:
>> https://github.com/draftmpd41/layers_draft_delhi_master_plan_2041 - see
>> the .bat file for the ogr2ogr commands
>>
>>
>>
>> --
>> Cheers,
>> Nikhil VJ
>> https://nikhilvj.co.in
>>
>>
>> On Wed, Nov 30, 2022 at 9:56 AM Devdatta Tengshe 
>> wrote:
>>
>>> Hi Vaidya,
>>>
>>> This excellent post by Nikhil would be a good starting point:
>>> https://groups.google.com/g/datameet/c/BGB-UeJqhpA/m/SFl4OgF9AgAJ
>>>
>>> Regards,
>>> Devdatta
>>>
>>>
>>> On Wed, 30 Nov 2022 at 08:49, Vaidya  wrote:
>>>
 Hi all,

 Wanted to know if it is possible to convert maps put out in pdfs to map
 files (shapefiles, geojsons or kml).
 This is regarding the sewage and water lines put out by BWSSB.
 The files can be found here:
 https://bwssb.karnataka.gov.in/info-2/BWSSB+GIS+MAP+Information/en

 Thanks,
 Vaidya

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>> 
>> .
>>
>

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