River Sample_ID Sample_type Collection_method Location_notes Latitude Longitude Date_Collected Depth_collected Salinity Ra223_xs Ra223_xs_error_pcnt Ra224_xs Ra224_xs_error_pcnt Ra228 Ra228_error Ra226 Ra226_error ratio_228_to_226 Kolyma FR1 River Bilge pump; 5 um prefilter and barrel On Kolyma; south of Cherskii; at mouth of Bolshoi Annui 68.51782 160.98093 2019-06-07 0.5 0.05 0.028 38 0.727 7.0 1.2 nd 2.242 nd 0.54 Kolyma FR2 River Bilge pump; 5 um prefilter and barrel On Kolyma; near Cherskii 68.6663 161.29991 2019-06-07 0.5 0.03 0.046 29 0.598 8.0 0.6 nd 1.941 nd 0.32 Kolyma FR3 River Bilge pump; 5 um prefilter and barrel 10 m from shore from back of docked boat at NESS 68.7382 161.39705 2019-06-09 0.3 0.02 0.032 24 0.189 8.0 0.6 nd 0.686 nd 0.90 Kolyma FR4 River Bilge pump; 5 um prefilter and barrel near Cherskii; west side of Kolyma river 68.82056 161.37341 2019-06-15 1 nd 0.045 33 0.52 8.0 3.7 nd 2.042 nd 1.82 Kolyma GW1 GW Peristaltic pump and pushpoint At river bank; 700 m north of lab 68.73683 161.37759 2019-06-08 0.1 0.16 nd nd nd nd nd nd nd nd nd Kolyma GW2 GW Peristaltic pump and black tubing Stream bank of tributary to Kolyma; south of NESS 68.74128 161.41415 2019-06-08 0.05 0.02 0.055 81 2.275 11 0.2 nd 1.902 nd 0.12 Kolyma GW3 GW Peristaltic pump and black tubing Stream bank of tributary to Kolyma; inland; northeast of NESS 68.7382 161.39705 2019-06-09 0.05 0.03 0.052 63 1.273 10 0.7 nd 3.156 nd 0.21 Kolyma GW4 GW Plastic cup scoop from spring box Spring box at research station on hillside 68.73817 161.39072 2019-06-13 0.1 0.08 0 nd 0.628 15 1.3 nd 1.732 nd 0.77 Kolyma A1 Soils only Shovel and plastic bag Gravel beach on spit south of Ambarchik 68.75905 161.44749 2019-06-11 0.05 nd nd nd nd nd nd nd nd nd nd Kolyma A2 River Bilge pump; 5 um prefilter and barrel 1 km S of Ambarchik; 100 m from shore; next to ice pack 69.62647 162.21352 2019-06-11 0.5 nd 0.065 28 0.451 9.0 1.3 nd 1.53 nd 0.86 Kolyma A3 River Bilge pump; 5 um prefilter and barrel Continuing South down Kolyma 69.54977 161.94406 2019-06-11 0.5 nd 0.043 47 0.531 11 0.9 nd 0.216 nd 4.09 Kolyma A4 GW Peristaltic pump and black tubing Saturated soils that were 2 m above Kolyma and near a tributary 69.49496 161.83179 2019-06-11 0.05 0.03 0.359 38 3.789 11 5.2 nd 3.858 nd 1.35 Kolyma A5 River Bilge pump; 5 um prefilter and barrel Continuing South down Kolyma 69.45956 161.69589 2019-06-11 0.5 nd 0.065 28 0.743 8.0 3.4 nd 2.34 nd 1.44 Kolyma A6 River Bilge pump; 5 um prefilter and barrel Continuing South down Kolyma 69.36044 161.44572 2019-06-11 0.5 nd nd nd nd nd nd nd nd nd nd Kolyma A7 River Bilge pump; 5 um prefilter and barrel 1 hour N of Cherskii by boat 69.19312 161.44765 2019-06-11 0.5 nd nd nd nd nd nd nd nd nd nd Kolyma B1 Bay Bilge pump; no prefilter Ambarchik bay 69.63049 162.30161 2019-06-16 0.5 0.04 0.139 32 0.496 14 0.3 nd 1.551 nd 0.18 Kolyma B2 River Bilge pump; no prefilter Mouth of Kolyma 69.62647 162.21352 2019-06-16 0.5 0.04 nd nd nd nd nd nd nd nd nd Kolyma B3 River Bilge pump; no prefilter Kolyma; main channel 69.56194 162.05684 2019-06-16 0.5 0.04 nd nd nd nd nd nd nd nd nd Kolyma B4 River Bilge pump; no prefilter Kolyma; main channel 69.50782 161.83092 2019-06-16 0.5 0.04 nd nd nd nd nd nd nd nd nd Kolyma B5 River Bilge pump; no prefilter Kolyma; main channel; near A1 69.44956 161.69258 2019-06-16 0.5 0.04 nd nd nd nd nd nd nd nd nd Kolyma B6 River Bilge pump; no prefilter Kolyma; main channel; 50-100 m from shore 69.30862 161.43808 2019-06-16 0.5 0.04 nd nd nd nd nd nd nd nd nd Kolyma B7 River Bilge pump; no prefilter Kolyma; main channel 69.30857 161.43785 2019-06-16 0.5 0.05 nd nd nd nd nd nd nd nd nd Kolyma B8 River Bilge pump; no prefilter "Kolyma; main channel; next to town ""Little Rooster""" 68.99344 161.53226 2019-06-16 0.5 0.05 nd nd nd nd nd nd nd nd nd Kolyma B9 River Bilge pump; no prefilter Kolyma; samller side channel 68.84376 161.58432 2019-06-16 0.5 0.03 nd nd nd nd nd nd nd nd nd Kolyma B10 River Bilge pump; no prefilter Kolyma; main channel; near Cherskii 68.7538 161.3063 2019-06-16 0.5 0.04 nd nd nd nd nd nd nd nd nd Kolyma 07-04. River Bilge pump; prefilter; cubitainer Kolyma; main channel 69.30857 161.43785 2019-09-01 0.5 0.06 0.11 82 0.901 26 4.5 nd nd nd nd Kolyma 07-07. River Bilge pump; prefilter; cubitainer Kolyma; main channel 69.50782 161.83092 2019-09-01 0.5 0.77 -0.046 nd 1.416 13 0.9 nd nd nd nd Kolyma 07-08-122 Bay Bilge pump; prefilter; cubitainer Kolyma; main channel 69.56194 162.05684 2019-09-01 0.5 1.17 0.12 70 1.398 17 1.4 nd 3.94 nd 0.35 Kolyma 07-08-128 Bay Bilge pump; prefilter; cubitainer Kolyma; main channel 69.56194 162.05684 2019-09-01 0.5 1.42 0.059 71 0.719 19 1.0 nd 2.787 nd 0.35 Kolyma 07-10. Bay Bilge pump; prefilter; cubitainer Mouth of Kolyma 69.63049 162.30161 2019-09-02 3 0.25 0.041 99 1.219 17 1.2 nd 4.208 nd 0.28 Womens Bay E1 estuary Well pump+prefilter; cubie Womens Bay 57.70259 -152.56937 2019-09-07 0.2 1.83 0.005 0.1 11.1 80 1.2 nd 1.49 0.117 0.79 Womens Bay E2 estuary Well pump+prefilter; cubie Womens Bay 57.70269 -152.5686 2019-09-07 0.2 2.99 0.009 0.3 11.1 120 0.6 nd 2.75 0.149 0.21 Womens Bay E3 estuary Well pump+prefilter; cubie Womens Bay 57.70274 -152.5666 2019-09-07 0.4 7.77 0.012 0.3 23.7 130 3.8 nd 4.214 0.125 0.90 Womens Bay E4 estuary Well pump+prefilter; cubie Womens Bay 57.70275 -152.56578 2019-09-07 0.5 12.28 0.018 0.3 33.7 160 4.7 nd 3.378 0.107 1.39 Womens Bay E5 estuary Well pump+prefilter; cubie Womens bay; bottom (saltier) 57.70275 -152.56578 2019-09-07 1 15.97 0.014 0.2 24.3 110 4.0 nd 8.453 0.212 0.47 Womens Bay G1 groundwater pushpoint; peripump; cubie Womens Bay marsh/mudflat 57.702655 -152.5697538 2019-09-07 0.2 2.84 nd nd 36.1 400 0.9 nd 4.12 0.369 0.21 Buskin G2 groundwater pushpoint; peripump; cubie Buskin River beach 57.7612 -152.47687 2019-09-08 0.3 0.06 nd nd 1.4 30 -0.2 nd 0.422 0.13 -0.38 Kalsin Bay G3 groundwater pushpoint; peripump; cubie Kalsin Bay; tidal creek near cow pasture 57.58925 -152.44531 2019-09-08 0.3 22.34 0.124 1.1 139.5 360 11.1 nd 4.054 0.122 2.74 Kalsin Bay G4 groundwater pushpoint; peripump; cubie Kalsin Bay; tidal creek near cow pasture 57.5887 -152.44821 2019-09-08 0.3 14.92 0.074 0.8 156.1 380 20.6 nd 5.568 0.267 3.70 Salonie Creek R1 river Well pump+prefilter; cubie Salonie Creek (Women's Bay) 57.6964809 -152.5608328 2019-09-07 1 0.04 0.002 0.1 2.4 30 -0.2 nd 0.589 0.035 -0.35 Buskin R2 river Well pump+prefilter; cubie Buskin River 57.75616 -152.4836 2019-09-08 0.2 0.45 0.005 0.1 7.2 40 2.1 nd 1.54 0.05 1.39 Susitna R3 river well pump; cubie; PREFILTERED LATER Susitna River boat ramp 61.7214154 -150.2070422 2019-09-10 0.2 0.07 0.003 0.1 9.1 50 5.7 nd 4.931 0.23 1.16 Matanuska R4 river well pump; cubie; PREFILTERED LATER Matanuska River 61.501252 -149.2508464 2019-09-10 0.2 0.11 0.002 0.1 6.5 50 2.3 nd 1.816 0.055 1.24 Knik R5 river well pump; cubie; PREFILTERED LATER Knik River 61.4832632 -149.2514167 2019-09-10 0.2 0.09 0.001 0.1 6.2 40 4.0 nd 1.878 0.058 2.15 Kodiak Island Shelf S1 shelf Deck hose+prefilter; barrel Farthest from land 57.7554 -152.0184 2019-09-06 1 30.19 nd nd nd nd 0.9 nd 1.771 0.042 0.49 Kodiak Island Shelf S2 shelf Deck hose+prefilter; barrel nd 57.74376667 -152.07825 2019-09-06 1 31 nd nd nd nd 0.5 nd 1.834 0.031 0.29 Kodiak Island Shelf S3 shelf Deck hose+prefilter; barrel nd 57.73521667 -152.1386833 2019-09-06 1 31.76 nd nd 0.1 0.0 2.5 nd 3.735 0.172 0.66 Kodiak Island Shelf S4 shelf Deck hose+prefilter; barrel nd 57.72845 -152.1985333 2019-09-06 1 31.8 nd nd nd nd 2.2 nd 4.761 0.142 0.45 Kodiak Island Shelf S5 shelf Deck hose+prefilter; barrel nd 57.72445 -152.26105 2019-09-06 1 32.13 0.001 0.0 0.3 10 3.0 nd 6.887 0.178 0.43 Kodiak Island Shelf S6 shelf Deck hose+prefilter; barrel nd 57.71785 -152.3255333 2019-09-06 1 31.68 nd nd nd nd 6.7 nd 5.068 0.087 1.32 Kodiak Island Shelf S7 shelf Deck hose+prefilter; barrel Innermost station 57.70811667 -152.5490667 2019-09-06 1 30.62 0.004 0.1 6.5 30 -5.5 nd 7.317 0.206 -0.75 Ellice E1 nd nd Nunavut Region of Canada 68.033333 -103.96667 nd nd 0.1 nd nd nd nd 7.7 1.1 1.48 0.4 5.20 Ellice E2 nd nd Nunavut Region of Canada 68.033333 -103.96667 nd nd 3.3 nd nd nd nd 25.2 2 9.43 0.73 2.67 Ellice E3A nd nd Nunavut Region of Canada 68.033333 -103.96667 nd nd 4.6 nd nd nd nd 26.4 1.9 9.88 0.67 2.67 Ellice E3B nd nd Nunavut Region of Canada 68.033333 -103.96667 nd nd 14.4 nd nd nd nd 58.7 2.5 18.26 0.82 3.21 Ellice E4 nd nd Nunavut Region of Canada 68.033333 -103.96667 nd nd 23.1 nd nd nd nd 65.0 2.1 20.16 0.71 3.22