Rivers, oceans, lakes, aquifers, groundwater, stormwater, urban canals, underground streams, estuaries, and more -- we are passionate about water quality! This page will help you find resources to explore the waterbodies you care about, and connect with other people who have the same interests: ### Questions on Water Quality: [questions:water-quality] **** ## Monitoring * [Water sampling](/water-sampling) * [Water sensors](/water-sensors) * Posts on #water-monitoring * Posts on #water-testing * Posts on #reagents ## Water quality parameters Read about different water quality parameters here, including pH, nitrogen, conductivity, temperature, ORP and turbidity: * https://publiclab.org/common-water-contaminants Also see this overview of 7 ways to monitorn water quality: * https://publiclab.org/notes/anngneal/12-08-2017/7-ways-to-measure-monitor-and-evaluate-water-quality ## Groups and projects working on water quality issues: [wikis:project:water-quality] **** ## Water quality related pages [wikis:parent:water-quality] **** ## Activities [activities:water-quality]...
| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| donblair | "Hey Greg, Wow, this is amazing! Super cool to see you forging ahead with this. My impression is that what's going on here is that the basic util..." | Read more » | almost 9 years ago | |||
| gbathree | "Hey Don, quick question, I was trying to compile the riffle code on a naked Arduino Uno (nothing attached), and downloaded the libraries and such, ..." | Read more » | almost 9 years ago | |||
| gbathree | "Awesome! I think given our workload, ordering one may be easier... I'll just wait till I hear more on that front. Do you have a device yourself a..." | Read more » | almost 9 years ago | |||
| donblair | "Hi Greg! Just revisiting this here (rather than on Twitter -- 140 char would almost be over right now :)). The platform looks fantastic. Re: get..." | Read more » | almost 9 years ago | |||
| gbathree | "Thanks! Yeah we've kept the data site hidden for a while because we're going to move it to the main site pretty soon. But you can find the curren..." | Read more » | almost 9 years ago | |||
| donblair | "... and congrats on all the amazing progress with the MultispeQ!! " | Read more » | almost 9 years ago | |||
| donblair | "Hey, Greg -- thanks for the feedback. And the data platform you're developing looks great! It'd be great to learn more about it ... is it on e.g...." | Read more » | almost 9 years ago | |||
| gbathree | "Hey Don - I hadn't seen this for a while and it looks awesome! We are just bringing our analysis system online at PhotosynQ which might be able to..." | Read more » | almost 9 years ago | |||
| marlokeno | "It's nearly impossible to separate the effects of irrigation hi-cap wells from the silica wash plants. Also, withdrawing large amounts of water for..." | Read more » | almost 9 years ago | |||
| WhiteRabbit | "I found this: http://www.vernier.com/products/sensors/col-bta/ which is interesting because unlike other low-cost spectrometers/colorimeters its s..." | Read more » | almost 9 years ago | |||
| warren | "Wow chris the barcode scanner filter idea is great!!! " | Read more » | almost 9 years ago | |||
| cfastie | "The Public Lab desktop spectrometer is quite capable of making a spectral graph of sunlight reflected from grass. The curve will differ from the pr..." | Read more » | almost 9 years ago | |||
| WhiteRabbit | "Here's a write-up that I'm finding quite helpful: http://publiclab.org/notes/nedhorning/11-01-2013/why-a-red-filter-should-work-well-for-ndvi Eyeb..." | Read more » | almost 9 years ago | |||
| WhiteRabbit | "Sounds like gel filters would be tricky at best, so I guess ixnay to that. How about this one? http://www.ebay.com/itm/Optical-Interference-Filter..." | Read more » | almost 9 years ago | |||
| cfastie | "I have not seen a cheap filter like Rosco that is truly a narrow band pass filter. It might be possible to combine filters to get a fairly narrow t..." | Read more » | almost 9 years ago | |||
| WhiteRabbit | "Cool! Awesome post. I suppose it's wishful (and probably foolish) thinking, but given the the low price of a filter swatch book and the seemingly..." | Read more » | almost 9 years ago | |||
| cfastie | "A filter switcher is a viable solution, especially for small cameras. Cameras as large as Powershots might require a big, precise device in front o..." | Read more » | almost 9 years ago | |||
| WhiteRabbit | "Thanks, Chris, for your thoughtful and very informative post. If I'm reading it right, perhaps using two monochrome cameras, each with the appropr..." | Read more » | almost 9 years ago | |||
| cfastie | "It should be possible to distinguish between stressed and non-stressed lawn grass using NDVI. I suspect that the $900 FieldScout performs more or l..." | Read more » | almost 9 years ago | |||
| WhiteRabbit | "Interestingly enough, I did just now find this $889 turf grass color meter which does, indeed, use NDVI! http://www.specmeters.com/nutrient-manage..." | Read more » | almost 9 years ago | |||
| WhiteRabbit | "Thanks for the links. Supposedly grass also changes color as the soil loses moisture (IIRC, it becomes less green and more blueish?), and people c..." | Read more » | almost 9 years ago | |||
| warren | "I think a lot of the challenge of using an Infragram camera well is the need for comparison. Comparing an area treated in one way with a "control" ..." | Read more » | almost 9 years ago | |||
| EdMallon | "Despite my zeal for the project, I have tried not to bomb everyone here with the many incremental updates as I go along. But I think I might have p..." | Read more » | almost 9 years ago | |||
| zengirl2 | "Bummer, I'm scheduled for an artist's opening on Friday night at my nature center (same weekend as the barnraising). However, I could swear I saw ..." | Read more » | about 9 years ago |