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Wallops Precipitation Science Research Facility
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Rain Gauge: GPM Precipitation Science Research Facility

Wallops PRF High-Density Gauge Network

The Wallops GPM PRF is currently supporting multiple gauge and disdrometer networks. A high density gauge grid is located in an around Pocomoke City, MD is aimed towards validating space-based estimates on the scale of the nominal GPM DPR footprint size of about 5 km.

The second, larger grid, also includes the Pocomoke network, but it's scale is approximately 0.5 degrees (lat & lon). This network will serve to better validate both DPR and GMI observations and is well sampled by NASA's NPOL radar, which is located in Newark, MD. The 0.5 degree scale is roughly bounded by Chincoteague, VA to the southeast; Crisfield, MD to the southwest; Salisbury, MD to the north; and, Newark, MD to the northeast.

GPM is also supporting NASA's Improved Participation of Minority Serving Institution (IPMSI) in STEM research. We have deployed gauges and disdrometer at several MSI' in New York, Maryland, Virginia, Louisiana, Texas and Arizona. Click here to visit our IPMSI pages.

Current Daily Totals (All Gauges)

Report Generated: Local 2026-08-09 18:15:09 EDT or 2026-08-09 22:15:09 UTC
Data Coverage for 2026-08-09
GaugeID Station Location Packets Voltage RSSI Tips A/B Accum_A [mm] Accum_B [mm] Accum_A [in] Accum_B [in] Bias [%]
PIERS0001 WFF Pad 88/96 12.85/13.64 -87/-71 0/0 0.00 0.00 0.00 0.00 0.00
PIERS0039 NPOL Radar 89/96 12.77/13.46 -113/-71 0/0 0.00 0.00 0.00 0.00 0.00
PIERS0002 Haywards_Lott 89/96 12.80/13.62 -87/-57 0/0 0.00 0.00 0.00 0.00 0.00
PIERS0003 William_St_Well 89/96 12.72/13.47 -113/-57 0/0 0.00 0.00 0.00 0.00 0.00
PIERS0004 Somerset_Rd 89/96 12.43/13.57 -113/-71 0/0 0.00 0.00 0.00 0.00 0.00
PIERS0005 American_Legion 89/96 12.84/13.58 -87/-71 0/0 0.00 0.00 0.00 0.00 0.00
PIERS0006 Doc_Johnson 88/96 12.83/13.55 -87/-71 0/0 0.00 0.00 0.00 0.00 0.00
PIERS0007 LeVecque 87/96 12.85/13.59 -103/-71 0/0 0.00 0.00 0.00 0.00 0.00
PIERS0011 Pocomoke_MS 89/96 12.52/13.42 -113/-71 0/0 0.00 0.00 0.00 0.00 0.00
PIERS0012 Pocomoke_HS 89/96 12.93/13.67 -113/-57 0/0 0.00 0.00 0.00 0.00 0.00
PIERS0018 Stockton Volunteer Fire Company 89/96 12.90/13.62 -113/-87 0/0 0.00 0.00 0.00 0.00 0.00
PIERS0021 How Sweet it is 89/96 12.74/13.62 -113/-57 0/0 0.00 0.00 0.00 0.00 0.00
PIERS0024 Silva_Rd 88/96 12.83/13.57 -87/-71 0/0 0.00 0.00 0.00 0.00 0.00
PIERS0027 WFF Pad 89/96 12.21/12.37 -113/-71 0/0 0.00 0.00 0.00 0.00 0.00
PIERS0028 WFF Pad 89/96 12.21/12.37 -113/-71 0/0 0.00 0.00 0.00 0.00 0.00
PIERS0026 UMES 89/96 12.36/13.36 -113/-57 0/0 0.00 0.00 0.00 0.00 0.00
PIERS0030 Texas A&M University - Corpus Christi 89/96 10.56/13.01 -113/-57 0/0 0.00 0.00 0.00 0.00 0.00
PIERS0031 Xavier University 89/96 12.50/13.56 -113/-57 0/0 0.00 0.00 0.00 0.00 0.00
PIERS0032 Texas Tech University 89/96 12.84/13.68 -113/-71 0/0 0.00 0.00 0.00 0.00 0.00
PIERS0029 Lehman College, NYC 88/96 12.76/13.53 -57/-57 1/0 0.25 0.00 0.01 0.00 100.00
PIERS0033 University of Arizona 89/96 12.87/13.53 -113/-57 0/0 0.00 0.00 0.00 0.00 0.00
PIERS0034 Prairie View A&M University 89/96 12.36/13.35 -113/-57 0/0 0.00 0.00 0.00 0.00 0.00
PIERS0035 Prairie View A&M University 89/96 12.46/13.51 -113/-57 0/0 0.00 0.00 0.00 0.00 0.00
PIERS0036 Prairie View A&M University 89/96 10.45/13.12 -113/-57 0/0 0.00 0.00 0.00 0.00 0.00
PIERS0038 Hampton University - CBBT, Island Three 89/96 12.48/13.43 -113/-57 0/0 0.00 0.00 0.00 0.00 0.00
PIERS0037 INCUS experiment - Fort Collins, CO 32/96 9.35/11.94 -113/-71 0/0 0.00 0.00 0.00 0.00 0.00
PIERS0040 Redden Farm 89/96 12.81/13.57 -113/-57 0/0 0.00 0.00 0.00 0.00 0.00
PIERS0008 Lowes 89/96 12.93/13.62 -113/-71 0/0 0.00 0.00 0.00 0.00 0.00
PIERS0041 GSFC/Greenbelt - B33 Rooftop 89/96 12.34/13.36 -113/-57 0/0 0.00 0.00 0.00 0.00 0.00
PIERS0042 WFF Pad 89/96 12.14/13.26 -113/-71 0/0 0.00 0.00 0.00 0.00 0.00

This is an interactive report. Clicking on a GaugeID will bring up the current daily rain accumulation for that gauge. Likewise, clicking on Voltage or RSSI will bring up daily time series of battery voltage and cell strength, respectively. Clicking on a Station Location will bring up a Google map showing the geographical location of that gauge.

Pocomoke Rain Gauges

GPM gauges

Hourly/Daily Rain Plot Daily/Monthly Rain Plot

IPMSI gauges

Hourly/Daily Rain Plot Daily/Monthly Rain Plot
(Started from 11/2022)
PIERS Hourly/Daily Rain Plot
PIERS Daily/Monthly Rain Plot
PIERS GAG Data GAG format
PIERS GMIN Data GMIN format

Other Gauge Quick Look Products

Daily/Monthly Accumulation Plots (DMAPlots)
Geographical Monthly Accumulation Plots (GMAPlot)
PDF/CDF Plots (PDFPlots)
Daily Rainfall Time Series Plots (DAILYPlot)
Cumulative One-Minute Rainfall Time Series Plots (MINUTEPlot)

PIERS Platform Data [24hr]

Pit & Standalone Gauges

SFL Gauges

As of 11/2025, there are 204 active tipping bucket gauges in SFL network. We routinely request raw SFL gauge data from South Florida Water management District Website at http://www.sfwmd.gov/. The raw data from some SFL gauges are available on daily basis but some are delayed for several months or even discontinued. Click here for more information.
  • SFL GAG Data GAG format
  • SFL GMIN Data GMIN format
  • SFL Daily/Monthly Accumulation (DMA) Plots
  • SFL Geographical Monthly Accumulation (GMA) Plots
  • SFL Probability Density Function (PDF) Plots
  • SFL Daily Rainfall Plots
  • SFL Cumulative One-Minute Rainfall Plots



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