The average rainfall chart shows the average amount of total rainfall, or amount of all liquid precipitation in millimetres (mm) such as rain, drizzle, freezing rain, and hail, observed at the location for each month of the specified year. Precipitation is measured using vertical depth of water (or water equivalent in the case of solid forms) which reaches the ground during a stated period.

Morocco MA: Average Precipitation in Depth data was reported at 346.000 mm/Year in 2014. This stayed constant from the previous number of 346.000 mm/Year for 2012. Morocco MA: Average Precipitation in Depth data is updated yearly, averaging 346.000 mm/Year from Dec 1962 (Median) to 2014, with 12 observations. The data reached an all-time high of 346.000 mm/Year in 2014 and a record low of 346.000 mm/Year in 2014. Morocco MA: Average Precipitation in Depth data remains active status in CEIC and is reported by World Bank. The data is categorized under Global Database’s Morocco – Table MA.World Bank.WDI: Land Use, Protected Areas and National Wealth. Average precipitation is the long-term average in depth (over space and time) of annual precipitation in the country. Precipitation is defined as any kind of water that falls from clouds as a liquid or a solid.; ; Food and Agriculture Organization, electronic files and web site.; ;

This excel contains data for Chapter 2 “Precipitation” of the 2017 State of Narragansett Bay & Its Watershed Technical Report (nbep.org). It includes the raw data behind Figure 1, “Annual precipitation at Providence, RI,” (page 64); Figure 2, “Annual precipitation at Worcester, MA,” (page 64); Figure 3, “Annual Palmer Drought Severity Index (PDSI) for Rhode Island,” (page 65); Figure 4, "Annual Palmer Drought Severity Index (PDSI) for Massachusetts," (page 65); Figure 5, "Climate model projection of winter total precipitation in RI or MA to 2100," (page 67); and Figure 6, "Climate model projection of winter annual snowfall in RI or MA to 2100," (page 67). For more information, please reference the Technical Report or contact info@nbep.org. Original figures are available at http://nbep.org/the-state-of-our-watershed/figures/.

This map layer shows polygons of average annual precipitation in the contiguous United States, for the climatological period 1961-1990. Parameter-elevation Regressions on Independent Slopes Model (PRISM) derived raster data is the underlying data set from which the polygons and vectors were created. PRISM is an analytical model that uses point data and a digital elevation model (DEM) to generate gridded estimates of annual, monthly and event-based climatic parameters.

Land cover (%) and climatic data (mean annual temperature, mean annual rainfall and xerothermic index) of the three areas (TC: Tyrrhenian Coast, MA: Maremma, CP: Central plains).

The Corps Water Management System (CWMS) includes four interrelated models to assist with water management for the basin:

• GeoHMS (Geospatial Hydrologic Modeling Extension)
• ResSIM (Reservoir System Simulation)
• RAS (River Analysis System)
• FIA (Flood Impact Analysis)

The Blackstone River Basin is located within the states of Massachusetts and Rhode Island. Of the 547 square miles that make up the basin, 147 square miles, or 27% of the basin, is in Rhode Island. About 400 square miles or 73% of the basin is located in Massachusetts. The basin is heavily urbanized characterized by a hilly terrain comprised of lakes and ponds. Elevations within the Blackstone River Basin range from 1200 feet in the northwest to about 3 feet above mean sea level at the mouth of the Seekonk River.

The coastal location of the Blackstone River basin exposes it to the effects of cyclonic disturbances and coastal storms in the region, resulting in periods of heavy precipitation. On an average, this basin receives approximately 48 inches of rainfall annually. The average annual snowfall in Worcester, MA is about 64 inches, which is representative of the headwaters of the Blackstone River Basin.The average annual snowfall in Providence, RI near the mouth of the Seekonk River is 346 inches.

Blackstone River extends from its headwaters in Worcester MA to its confluence with Abbott Run in Central Falls RI creating the Seekonk River. The Seekonk River discharges into the Providence River eventually draining into the Narragansett Bay. Some of the major tributaries to the Blackstone River include Quinsigamond River, Mumford River, West River, Branch River, Mill River and Peters River The key inflow gages in the Blackstone River basin include Kettle Brook at Rockland Street near Auburn MA, Quinsigamond River at North Grafton MA, Mumford River at Uxbridge MA, West River below West Hill Dam near Uxbridge MA, Branch River at Forestdale RI, Mill River at Harris PD Outlet at Woonsocket RI, Peters River RT 114 Bridge at Woonsocket RI and Abbott Run at Valley Falls RI.

There are two USACE dams located within the Blackstone River Basin. They include the West Hill Dam on the West River and Woonsocket Falls on the Blackstone River. West Hill Dam is a dry reservoir that is typically run of river. Channel capacity of Mill Creek in this area is 425 cfs. Woonsocket Falls Dam was modified with tainter gates to control reservoir stages. A hydropower facility pulls water from the reservoir and discharges the same flow back into the Blackstone River channel downstream of the Woonsocket Falls gates.

The Blackstone River basin land use is largerly characterized by forest land (52% of the basin area) and residential development (22% of the basin area) with significant industrial development along the Blackstone River in Worcester MA, Woonsocket RI, Pawtucket RI and Central Falls RI. Much of the water-powered industrial development along the rivers in the Blackstone River basin stemmed from the first successful textile mill in America, the Slater Mill in Pawtucket RI constructed in 1793.Less than 2% of the basin’s land use is considered cropland or agricultural.

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