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2026 Lake Host Program
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Suspicious Specimen Report
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Updated:7/15/2026
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Note: Aquatic invasive species "saves" are in bold in the status column. Specimens identified by NH LAKES and shared with NHDES.
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TOTAL SAVES:7
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WaterbodyTownDate ReceivedArriving or Departing Common NameLatin NameStatus
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1Spofford LakeChesterfield6/1/2026ArrivingCoontail, Pondweed (native), misc. aquatic plant parts, algaeC. demersum, Potamogeton sp., miscNative
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2Pawtuckaway Lake Nottingham6/3/2026ArrivingTree partsN/AN/A
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3Silver LakeMadison6/4/2026ArrivingAquatic plant partsN/ANative
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4Spofford LakeChesterfield6/4/2026ArrivingWaterweedElodea canadensisNative
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5Spofford LakeChesterfield6/4/2026ArrivingWaterweed, SpikerushElodea canadensis, Eleocharis sp.Native
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6Northwood LakeNorthwood6/5/2026DepartingPondweed (native)Potamgeton sp.Native
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7Bow LakeBow6/6/2026DepartingAquatic plant partsN/ANative
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8Lake SunapeeGeorge's Mills6/6/2026ArrivingCurly-leaf pondweed, coontail, bladderwortPotamogeton crispus, C. demersum, Utricularia sp.Invasive, Native
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9Potanipo PondBrookline6/7/2026DepartingWhite waterlily, Tapegrass, Pondweed (native)Nymphaea odorata, Vallisneria, Potamogeton sp.Native
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10Northwood LakeNorthwood6/8/2026DepartingFilamentous green algae, aquatic plant partsN/ANative
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11Great PondKingston6/8/2026DepartingWhite waterlilyNymphaea odorataNative
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12Newfound LakeBristol6/12/2026ArrivingTree partsN/AN/A
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13Potanipo PondBrookline6/12/2026ArrivingCurly-leaf pondweedPotamogeton crispusInvasive
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14Lake WinnisquamBelmont6/12/2026ArrivingSpiny water flea Bythotrephes longimanus Invasive
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15Bow LakeBow6/13/2026DepartingSpikerushEleocharis sp.Native
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16Milton Three PondsMarina, ME6/13/2026DepartingWaterlily plant partsNymphaeaNative
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17Great PondKingston6/13/2026DepartingLittle floating heartNymphoides cordataNative
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18Great PondKingston6/13/2026DepartingSpikerushEleocharis sp.Native
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19Great East LakeActon6/14/2026ArrivingClasping-leaf pondweedPotamogeton perfoliatusNative
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20Great East LakeActon6/14/2026ArrivingClasping-leaf pondweedPotamogeton perfoliatusNative
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21Lake MonomonacRindge6/14/2026DepartingPipewort, Spikerush, Pondweed (native), BladderwortEriocaulon sp., Eleocharis sp., Potamogeton sp., Utricularia sp.Native
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22Kezar LakeSutton 6/14/2026DepartingThinleaf pondweedPotamogeton sp.Native
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23Lake SunapeeSunapee6/14/2026DepartingSpikerushEleocharis sp.Native
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24Lake WinnipesaukeeMoultonborough6/14/2026DepartingBladderwortUtricularia sp.Native
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25Pawtuckaway Lake Nottingham6/14/2026DepartingBladderwortUtricularia sp.Native
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26Great PondKingston6/17/2026DepartingBladderwort, White waterlily, Spikerush, Little floating heart, TapegrassUtricularia sp., Nymphaea odorata, Eleocharis sp., Nymphoides cordata, Vallisneria sp.Native
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27Silver LakeMadison6/19/2026ArrivingMilfoil (Unknown)Myriophyllum sp. unknownN/A
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28Great PondKingston6/19/2026DepartingWatershield, Thin-leaf pondweed, White waterlily, Little floating heartBrasenia schreberi, Potamogeton sp., Nymphaea odorata, Nymphoides cordataNative
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29Great East LakeActon6/19/2026DepartingLarge-leaf pondweedPotamogeton amplifoliusNative
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30Northwood LakeNorthwood6/19/2026DepartingFilamentous green algae, Thin-leaf pondweedN/A, Potamogeton sp.Native
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31Milton Three PondsMarina, ME6/20/2026DepartingThin-leaf pondweed, Tree partsPotamogeton sp., N/ANative
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32Northwood LakeNorthwood6/21/2026DepartingBladderwortUtricularia sp.Native
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33Northwood LakeNorthwood6/21/2026DepartingBladderwortUtricularia sp.Native
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34Pawtuckaway Lake Nottingham6/23/2026DepartingVariable milfoil, TapegrassMyriophyllum heterophyllum, Vallisneria sp.Invasive, Native
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35Thorndike PondRindge6/23/2026DepartingThin-leaf pondweed, MuskgrassPotamogeton sp., CharaNative
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36Great PondKingston6/24/2026DepartingBladderwort, Tree parts, Thin-leaf pondweedUtricularia sp., N/A, Potamogeton sp.Native
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37Beaver LakeDerry6/25/2026DepartingBassweed (or Large-leaf pondweed)Potamogeton amplifoliusNative
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38Great PondKingston6/25/2026DepartingClasping leaf pondweed, Bur-reed, Thin-leaf pondweed, Bassweed (or Large-leaf pondweed)Potamogeton perfoliatus, Sparganium sp., Potamogeton sp., Potamogeton amplifoliusNative
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39Lake WicwasMeredith6/27/2026ArrivingBladderwort, Yellow lily, Bur-reed, Waterlily plant partsUtricularia sp., Nuphar variegata, Sparganium sp., NymphaeaceaNative
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40Contoocook LakeRindge6/27/2026ArrivingWaterlily plant parts, Bassweed (or Large-leaf pondweed)Nymphaeacea, Potamogeton amplifoliusNative
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41Mascoma LakeLebanon6/27/2026DepartingClasping leaf pondweedPotamogeton perfoliatusNative
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42Northwood LakeNorthwood6/27/2026DepartingBladderwortUtricularia sp.Native
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43Pawtuckaway LakeNottingham6/27/2026DepartingNitella, Bladderwort, Aquatic moss, Spikerush, Thin-leaf pondweed, White waterlilyNitella, Utricularia sp., Fontinalis, Eleocharis sp., Potamogeton sp., Nymphaea odorataNative
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44Great PondKingston6/27/2026DepartingWhite waterlilyNymphaea odorataNative
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45Great PondKingston6/27/2026DepartingClasping leaf pondweedPotamogeton perfoliatusNative
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46Great PondKingston6/27/2026DepartingPondweed (Native), WatershieldPotamogeton sp., Brasenia schreberiNative
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47Great PondKingston6/27/2026DepartingWaterlily plant partsNymphaeaceaNative
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48Pawtuckaway LakeNottingham6/28/2026DepartingBladderwortUtricularia sp.Native
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49Silver LakeMadison6/28/2026ArrivingSpikerush, Filamentous green algaeEleocharis sp., N/ANative
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50Northwood LakeNorthwood6/28/2026DepartingBladderwort, Filamentous green algaeUtricularia sp., N/A Native
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51Great PondKingston6/28/2026DepartingCrowfoot, Tapegrass, Thin-leaf pondweed, Bladderwort, Aquatic plant partsRanunculus sp., Vallisneria, Potamogeton sp., Utricularia sp., N/ANative
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52Great PondKingston6/28/2026DepartingClasping leaf pondweedPotamogeton perfoliatusNative
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53Kezar LakeSutton 6/29/2026DepartingBladderwortUtricularia sp.,Native
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54Beaver LakeDerry7/1/2026DepartingBassweed (or Large-leaf pondweed)Potamgeton amplifoliusNative
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55Pleasant LakeNew London7/1/2026ArrivingUnknown (Innert material)N/AN/A
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56Northwood LakeNorthwood7/2/2026DepartingBladderwortUtricularia sp.Native
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57Great PondKingston7/3/2026DepartingBur-reedSparganium sp.Native
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58Ossipee LakeFreedom7/3/2026DepartingUnknownN/AN/A
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59Contoocook LakeRindge7/3/2026DepartingFloating-leaf pondweed, Ribbon-leaf pondweedPotamogeton natans, Potamogeton epihydrusNative
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60Contoocook LakeRindge7/3/2026DepartingFlat-stem pondweedPotamogeton zosteriformisNative
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61Contoocook LakeRindge7/3/2026DepartingSpikerush, White waterlilyEleocharis sp., Nymphaea odorataNative
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62Great PondKingston7/3/2026DepartingWhite waterlily, Bladderwort, Bur-reed, Pondweed (Native)Nymphaea odorata, Utricularia sp., Sparganium, Potamogeton sp.Native
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63Crystal LakeGilmanton7/3/2026DepartingBassweed (or Large-leaf pondweed), Little floating-heartPotamogeton amplifolius, Nymphoides cordataNative
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64Ossipee LakeFreedom7/4/2026DepartingMilfoil - too decayed to IDMyriophyllum sp.N/A
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65Milton Three PondsMarina, ME7/4/2026DepartingAquatic plant partsN/AN/A
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66Milton Three PondsMarina, ME7/4/2026DepartingThin-leaf pondweedPotamogeton sp.Native
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67Milton Three PondsMarina, ME7/4/2026DepartingSpikerushEleocharis sp.Native
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68Milton Three PondsMarina, ME7/4/2026DepartingFilamentous green algae, SpikerushN/A, Eleocharis sp.Native
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69Milton Three PondsMarina, ME7/4/2026DepartingThin-leaf pondweedPotamogeton sp.Native
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70Pawtuckaway LakeNottingham7/5/2026DepartingSouthern niad, Waterlily plant partsNajas guadalupensis, NymphaeaceaNative
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71Pawtuckaway LakeNottingham7/5/2026DepartingBladderwortUtricularia sp.Native
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72Pawtuckaway LakeNottingham7/5/2026DepartingBladderwort, TapegrassUtricularia sp., VallisneriaNative
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73Great PondKingston7/5/2026DepartingWhite waterlilyNymphaea odorataNative
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74Milton Three PondsMarina, ME7/5/2026DepartingDragonfly nymph cases/carapacesOdonataNative
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75Pleasant Lake Deerfield7/8/2026ArrivingThin-leaf pondweed, BladderwortPotamogeton sp., Utricularia sp.Native
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76Pleasant LakeDeerfield7/8/2026ArrivingTree partsN/AN/A
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77Pawtuckaway LakeNottingham7/8/2026DepartingCoontailCeratophyllum sp.Native
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78Pawtuckaway LakeNottingham7/8/2026DepartingBladderwortUtricularia sp.Native
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79Great East LakeActon, ME7/8/2026ArrivingSeaweed (Marine)N/ANative
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80Great PondKingston7/9/2026ArrivingWhite waterlilyNymphaea odorataNative
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81Great PondKingston7/10/2026DepartingBur-reedSparganium sp.Native
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82Contoocook LakeRindge7/10/2026Departing
Bassweed (or Large-leaf pondweed), White waterlily, Yellow lily, Naiad
Potamogeton amplifolius, Nymphaea odorata, Nuphar variegata, Najas sp.
Native
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83Lake MonomonacRindge7/10/2026ArrivingThin-leaf pondweedPotamogeton sp.Native
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84Lake MonomonacRindge7/10/2026ArrivingSpikerush, Thin-leaf pondweedEleocharis sp., Potamogeton sp.Native
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85Beaver LakeDerry7/10/2026DepartingNaiadNajas sp.Native
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86Contoocook LakeRindge7/10/2026ArrivingBladderwortUtricularia sp.Native
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87Great East LakeActon, ME7/11/2026DepartingPondweed (Native)Potamogeton sp.Native
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88Lake Winnipesaukee - Back BayWolfeboro7/11/2026DepartingWaterweedElodea sp.Native
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89Bow LakeBow7/11/2026ArrivingThin-leaf pondweedPotamogeton sp.Native
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90Lake Winnipesaukee - Back BayWolfeboro7/11/2026DepartingWaterweedElodea sp.Native
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91Lake Winnipesaukee - Back BayWolfeboro7/11/2026DepartingWaterweedElodea sp.Native
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92Lake Winnipesaukee - Back BayWolfeboro7/11/2026DepartingWaterweedElodea sp.Native
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93Lake Winnipesaukee - Back BayWolfeboro7/11/2026DepartingWaterweedElodea sp.Native
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94Lake Winnipesaukee - Back BayWolfeboro7/11/2026DepartingRobbins PondweedPotamogeton robbinsiiNative