The Public Water Supply (PWS) datalayer contains the locations of public community surface and groundwater supply sources and public non-community supply sources as defined in 310 CMR 22.00. The public water supply systems represented in this datalayer are based primarily on information in the DEPs Water Quality Testing System (WQTS) database. The WQTS database is the Department?s central database for tracking water supply data. The PWS datalayer also contains the locations of proposed wells that have a defined DEP approved wellhead protection area (Zone IIs). Proposed sources are not currently tracked in WQTS. In ArcSDE the layer is named PWSDEP_PT. As stated in 310 CMR 22.02, a Public Water System means a system for the provision to the public of piped water for human consumption if such system has at least 15 service connections or regularly serves an average of at least 25 individuals daily at least 60 days of the year. Such term includes (1) any collection, treatment, storage and distribution facilities under control of the operator of such a system and used primarily in connection with such system, and (2) any collection or pretreatment storage facilities not under such control which are used primarily in connection with such system. A public water system is either a community or a non-community water system. (a) Community water system means a public water system which serves at least 15 service connections used by year-round residents or regularly serves at least 25 year-round residents. (b) Non-community water system means a public water system that is not a community water system. 1. Non-transient non-community water system (NTNC) means a public water systems that is not a community water system and that regularly serves at least 25 of the same persons or more approximately four or more days per week, more that six months or 180 days per year, such as a workplace providing water to it?s employees. 2. Transient non-community water system (TNC) means a public water system that is not a community water system or a non-transient non-community water system but is a public water system which serves water to 25 different persons at least 60 days of the year. Some examples of these types of systems are: restaurants, motels, camp grounds, parks, golf courses, ski areas and community centers.

This layer is sourced from gisprpxy.itd.state.ma.us.

We built three contrasted future LULC scenarios from 2020 to 2085 with the CLUMPY model (Mazy and Longaretti, 2022). The CLUMPY model is an innovative model of land use and land cover change comprising a calibration-estimation module separate from a non-biased allocation module. It is calibrated by using time series of past LULC maps (Mazy and Longaretti, 2022). The model then calculates transition probabilities for each LULC class according to relevant spatial explanatory variables. Next, the model can produce maps of future LULC distributions according to information it learned during the calibration-estimation phase. This model has the benefits of being easy to use, proposing nonbiased allocation methods and producing scenarios of future LULC change either by adjusting manually the matrix of LULC transitions probabilities (used for the Conservation and Tourism scenarios) or by training the model on specific areas of the past time series (only used for the Conservation scenario)., The scenarios were based on the “Montagne 2040†report that explore potential future for specific alpine region and their associated narratives (Claveranne, 2013). The “Business As Usual†scenario (BAU) extended the 2006-2016 observed trends. The “Conservation†scenario assumed: the expansion of protected areas, reduced support for agriculture and livestock farming, and LULC transitions, i.e., from grassland to shrub or forest, and from shrubland to forest (aka landscape encroachment). The “Tourism†scenario assumed the development of ski resorts and mass tourism in the valley, growing urbanization at low and middle altitude, and associated LULC transitions from grassland or shrubland to urban (see Supplementary Material D). Scenarios of LULC change only considered broad categories of LULC: urban, forest, shrub and grassland., , # Land use and land cover scenarios for the Maurienne valley (French Alps) at 2100 horizon produced using CLUMPY model

https://doi.org/10.5061/dryad.83bk3jb0h

This datasets comprised several maps in .asc format for the Maurienne valley in the french alps.

Description of the data and file structure

Data are in EPSG: 4326.

Three scenarios of future change are provided (Buisiness as Usual - S1, Conservation - S2, Tourism - S3). For each of those scenarios two data are provided : 2050 and 2085. Only the S1 have a map for 2020.

LULC code description