Herts Bird Club - WeBS 2019

The Wetland Bird Survey (WeBS) is organised nationally by the British Trust for Ornithology and supported by the WWT, RSPB and JNCC. Its principle aims are to identify population sizes, determine trends in numbers and distribution and to identify important sites for waterbirds across the UK.

In 2019 the Hertfordshire counts were organised by Cath Patrick (Lee Valley from Ware south) and Jim Terry (all other sites) and were undertaken by dedicated observers each month. Some sites are not surveyed during the summer months (April to August) but otherwise coverage is most comprehensive.

In 2019 the core count were the following Sundays: 20 Jan, 17 Feb, 24 Mar, 21 Apr, 19 May, 16 Jun, 7 Jul, 4 Aug, 15 Sep, 13 Oct, 17 Nov, 15 Dec. The scheme organisers have agreed that the Lee Valley counts can be undertaken the previous Saturday, and some counts were carried out on the previous or subsequent weekends.

Sincere thanks are due to everyone who contributes to this important monitoring project and especially to Cath and Jim for their co-ordination.

We are always looking for volunteers to assist with this national monitoring effort both to fill any gaps in the existing coverage but also to take on other sites which could hold significant numbers of waterfowl. The effort involves counting all such species at one wetland site each month on Saturday or Sunday. This should ideally happen every month but most importantly from January to March and September to December inclusive. Please contact Jim Terry (46, Manor Way, Borehamwood, Herts, WD6 1QY) or Cath Patrick (c/o LVRP, Myddleton House, Bull’s Cross, Enfield, EN2, 9HG) if you are able to help. Thank you.

Mute Swan
Canada Goose
Wigeon
Gadwall
Teal
Mallard
Shoveler
Pochard
Tufted Duck
Goldeneye
Ruddy Duck
Little Grebe
Great Crested Grebe
Cormorant
Grey Heron
Moorhen
Coot

Mute SwanTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	28	21	23	29	23	18	34	34	29	37	50	34
Batchworth Lake	1	2	4	2	3	0	2	nc	4	4	4	4
Stocker's and Bury Lakes	18	11	12	19	11	12	22	26	23	30	44	20
Maple Lodge NR	2	2	2	2	2	2	2	2	0	0	0	2
Lynsters Lake	5	2	2	nc	1	1	2	3	0	2	nc	6
Pynesfield North/South Lakes	2	2	2	1	1	1	0	1	0	1	2	2
Helicon Lake	0	2	0	3	2	0	2	0	1	0	0	0
Troy Mill Lake	0	0	1	2	3	2	4	2	1	0	0	0
Lea Valley:	121	61	44	50	30	24	20	51	114	104	142	96
Lea Valley:
East Hyde	2	3	2	2	2	2	2	7	2	2	2	2
Brocket Park	0	3	nc	2	2	2	2	5	0	nc	3	nc
Amwell GP - Ware / Thrift GP	0	nc	4	8	1	1	nc	4	0	nc	0	0
Amwell NR - others	5	6	2	5	4	3	3	7	9	7	8	14
Stanstead Abbotts Lakes - N lake	9	0	6	6	0	2	0	4	4	8	7	2
Rye Meads	9	6	3	nc	nc	nc	nc	nc	46	21	21	7
Broxbourne GP	4	6	2	6	3	3	1	5	9	5	7	6
Cheshunt GPs:	92	37	25	21	18	11	12	19	44	61	94	65
Cheshunt GPs:
Herts:	47	13	21	13	15	8	9	10	16	15	42	39
Herts:
Bowyers Water	34	nc	13	7	9	3	4	6	14	6	31	28
Cheshunt Lake	2	3	1	2	1	0	0	0	0	0	0	2
Northmet Lake	2	4	0	1	2	0	2	0	2	2	2	2
Slipe Lane Lake	2	3	3	1	1	3	1	2	0	4	5	3
Turnford Lakes	7	3	4	2	2	2	2	2	0	3	4	4
ex-Herts:	7	4	4	8	2	3	3	9	12	14	4	5
ex-Herts:
Friday Lake	0	0	0	0	0	2	2	2	3	0	0	0
Hooks Marsh GP	2	0	1	2	1	0	0	6	0	1	0	0
Met Police Pit	1	1	1	1	0	0	1	1	2	4	2	2
Seventy Acres Lake	4	3	2	5	1	1	0	0	7	9	2	3
Essex:	38	20	0	0	1	0	0	0	16	32	48	21
Essex:
Hall Marsh Scrape	2	1	0	0	1	0	0	0	0	0	0	0
Holyfield Marsh Lake	36	19	nc	nc	nc	nc	nc	nc	16	32	48	21
Radwell Mill	18	18	14	16	19	18	nc	20	13	13	13	10
Panshanger Park	4	3	3	0	4	1	nc	nc	3	4	7	2
Fairlands Valley Park	3	2	2	4	2	2	2	nc	2	0	2	2
Verulamium Park	7	6	11	7	0	0	0	0	3	11	6	13
Tyttenhanger GPs - all	nc	10	13	11	14	17	12	13	18	19	7	16
Hilfield Park Reservoir	0	0	0	4	6	10	12	12	4	6	13	10
Tring Reservoirs	32	10	8	6	11	14	19	32	38	34	nc	31

Canada GooseTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	162	188	164	133	59	250	258	191	74	288	224	173
Batchworth Lake	14	30	23	33	11	44	38	nc	18	9	6	47
Stocker's and Bury Lakes	96	63	106	96	45	168	180	176	4	268	206	79
Maple Lodge NR	0	2	2	3	3	2	0	0	0	0	0	4
Lynsters Lake	22	91	33	nc	0	35	32	9	52	10	nc	40
Pynesfield North/South Lakes	0	0	0	0	0	0	0	0	0	0	0	0
Helicon Lake	30	0	0	1	0	0	0	6	0	0	12	2
Troy Mill Lake	0	2	0	0	0	1	8	0	0	1	0	1
Lea Valley:	174	290	320	310	87	455	491	471	717	297	281	130
Lea Valley:
East Hyde	12	15	82	72	0	62	56	77	98	55	10	21
Brocket Park	18	11	nc	0	10	2	5	32	80	nc	95	nc
Amwell GP - Ware / Thrift GP	2	nc	9	21	4	12	nc	0	5	nc	0	2
Amwell NR - others	38	63	60	101	29	110	68	172	93	11	40	64
Stanstead Abbotts Lakes - N lake	2	43	63	20	2	28	33	42	6	4	40	1
Rye Meads	9	25	31	nc	nc	nc	nc	nc	0	40	25	7
Broxbourne GP	3	2	1	5	2	2	18	0	0	4	47	0
Cheshunt GPs:	90	131	74	91	40	239	311	148	435	183	24	35
Cheshunt GPs:
Herts:	80	15	27	27	22	112	218	69	119	24	1	5
Herts:
Bowyers Water	0	nc	12	13	13	79	117	18	68	14	0	0
Cheshunt Lake	4	2	5	0	0	0	0	18	4	0	1	5
Northmet Lake	74	3	6	6	5	33	101	33	19	10	0	0
Slipe Lane Lake	2	0	4	3	2	0	0	0	7	0	0	0
Turnford Lakes	0	10	0	5	2	0	0	0	21	0	0	0
ex-Herts:	10	19	41	56	18	127	93	79	106	32	1	6
ex-Herts:
Friday Lake	0	0	2	2	0	32	55	2	0	0	0	0
Hooks Marsh GP	0	2	15	15	2	17	0	29	7	5	0	2
Met Police Pit	3	15	19	10	5	14	0	6	10	2	0	0
Seventy Acres Lake	7	2	5	29	11	64	38	42	89	25	1	4
Essex:	0	97	6	8	0	0	0	0	210	127	22	24
Essex:
Hall Marsh Scrape	0	19	6	8	0	0	0	0	0	17	1	2
Holyfield Marsh Lake	0	78	nc	nc	nc	nc	nc	nc	210	110	21	22
Radwell Mill	0	17	4	18	24	44	nc	2	0	0	0	0
Panshanger Park	36	57	64	26	36	53	nc	nc	14	0	6	8
Fairlands Valley Park	169	100	111	77	93	283	290	nc	7	75	40	74
Verulamium Park	49	19	27	17	6	33	63	42	131	0	48	17
Tyttenhanger GPs - all	nc	57	57	30	15	55	70	64	15	23	122	76
Hilfield Park Reservoir	12	12	0	4	1	90	41	0	0	0	0	0
Tring Reservoirs	51	28	55	35	22	125	149	70	3	206	nc	30

WigeonTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	75	25	5	0	0	0	0	0	0	1	7	36
Batchworth Lake	0	0	0	0	0	0	0	nc	0	0	0	0
Stocker's and Bury Lakes	59	25	5	0	0	0	0	0	0	0	7	22
Maple Lodge NR	0	0	0	0	0	0	0	0	0	0	0	0
Lynsters Lake	11	0	0	nc	0	0	0	0	0	1	nc	14
Pynesfield North/South Lakes	5	0	0	0	0	0	0	0	0	0	0	0
Helicon Lake	0	0	0	0	0	0	0	0	0	0	0	0
Troy Mill Lake	0	0	0	0	0	0	0	0	0	0	0	0
Lea Valley:	47	0	0	0	0	0	0	0	10	61	54	13
Lea Valley:
East Hyde	0	0	0	0	0	0	0	0	0	0	0	0
Brocket Park	0	0	nc	0	0	0	0	0	0	nc	0	nc
Amwell GP - Ware / Thrift GP	0	nc	0	0	0	0	nc	0	0	nc	0	0
Amwell NR - others	37	0	0	0	0	0	0	0	2	7	15	6
Stanstead Abbotts Lakes - N lake	0	0	0	0	0	0	0	0	0	0	0	0
Rye Meads	0	0	0	nc	nc	nc	nc	nc	7	21	1	0
Broxbourne GP	0	0	0	0	0	0	0	0	0	0	0	0
Cheshunt GPs:	10	0	0	0	0	0	0	0	1	33	38	7
Cheshunt GPs:
Herts:	10	0	0	0	0	0	0	0	1	15	14	6
Herts:
Bowyers Water	10	nc	0	0	0	0	0	0	1	15	14	6
Cheshunt Lake	0	0	0	0	0	0	0	0	0	0	0	0
Northmet Lake	0	0	0	0	0	0	0	0	0	0	0	0
Slipe Lane Lake	0	0	0	0	0	0	0	0	0	0	0	0
Turnford Lakes	0	0	0	0	0	0	0	0	0	0	0	0
ex-Herts:	0	0	0	0	0	0	0	0	0	2	0	0
ex-Herts:
Friday Lake	0	0	0	0	0	0	0	0	0	0	0	0
Hooks Marsh GP	0	0	0	0	0	0	0	0	0	0	0	0
Met Police Pit	0	0	0	0	0	0	0	0	0	0	0	0
Seventy Acres Lake	0	0	0	0	0	0	0	0	0	2	0	0
Essex:	0	0	0	0	0	0	0	0	0	16	24	1
Essex:
Hall Marsh Scrape	0	0	0	0	0	0	0	0	0	0	0	1
Holyfield Marsh Lake	0	0	nc	nc	nc	nc	nc	nc	0	16	24	0
Radwell Mill	0	0	0	0	0	0	nc	0	0	0	0	0
Panshanger Park	2	0	0	0	0	0	nc	nc	0	33	0	0
Fairlands Valley Park	0	0	0	0	0	0	0	nc	0	0	0	0
Verulamium Park	0	0	0	0	0	0	0	0	0	0	0	0
Tyttenhanger GPs - all	nc	0	0	0	0	0	0	0	1	2	0	0
Hilfield Park Reservoir	0	0	6	0	0	0	0	0	0	3	0	0
Tring Reservoirs	183	136	35	0	0	0	0	0	23	201	nc	145

GadwallTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	34	25	9	36	19	74	86	61	10	38	31	23
Batchworth Lake	0	0	0	0	0	0	0	nc	0	0	0	0
Stocker's and Bury Lakes	19	0	0	19	3	19	40	31	10	21	21	11
Maple Lodge NR	4	2	9	16	14	55	39	5	0	7	7	4
Lynsters Lake	0	21	0	nc	0	0	0	3	0	2	nc	7
Pynesfield North/South Lakes	11	2	0	0	0	0	0	0	0	2	2	1
Helicon Lake	0	0	0	0	2	0	0	0	0	0	1	0
Troy Mill Lake	0	0	0	1	0	0	7	22	0	6	0	0
Lea Valley:	329	259	235	54	59	58	171	163	451	650	403	401
Lea Valley:
East Hyde	18	6	6	6	2	2	0	2	0	0	4	2
Brocket Park	0	0	nc	5	3	0	0	0	0	nc	0	nc
Amwell GP - Ware / Thrift GP	1	nc	4	10	12	8	nc	2	0	nc	0	0
Amwell NR - others	57	27	15	15	23	13	95	50	0	77	84	65
Stanstead Abbotts Lakes - N lake	53	41	34	10	12	6	27	64	40	55	24	54
Rye Meads	84	133	158	nc	nc	nc	nc	nc	312	365	92	84
Broxbourne GP	9	9	8	3	2	0	0	0	0	0	29	31
Cheshunt GPs:	107	43	10	5	5	29	49	45	99	153	170	165
Cheshunt GPs:
Herts:	59	6	0	1	0	0	0	20	7	93	74	70
Herts:
Bowyers Water	37	nc	0	1	0	0	0	2	3	35	64	67
Cheshunt Lake	0	0	0	0	0	0	0	0	0	0	0	1
Northmet Lake	0	0	0	0	0	0	0	17	2	0	1	2
Slipe Lane Lake	9	4	0	0	0	0	0	0	0	55	2	0
Turnford Lakes	13	2	0	0	0	0	0	1	2	3	7	0
ex-Herts:	16	12	7	0	5	29	49	25	72	18	0	3
ex-Herts:
Friday Lake	8	0	0	0	0	0	0	0	2	0	0	0
Hooks Marsh GP	8	7	6	0	1	16	14	7	0	1	0	0
Met Police Pit	0	0	0	0	0	0	0	0	0	0	0	0
Seventy Acres Lake	0	5	1	0	4	13	35	18	70	17	0	3
Essex:	32	25	3	4	0	0	0	0	20	42	96	92
Essex:
Hall Marsh Scrape	0	7	3	4	0	0	0	0	0	4	0	0
Holyfield Marsh Lake	32	18	nc	nc	nc	nc	nc	nc	20	38	96	92
Radwell Mill	1	2	3	8	0	0	nc	0	0	0	4	0
Panshanger Park	192	20	28	36	88	130	nc	nc	85	94	76	112
Fairlands Valley Park	0	0	0	0	0	0	0	nc	0	0	0	0
Verulamium Park	15	22	7	2	0	0	0	0	0	4	0	2
Tyttenhanger GPs - all	nc	30	37	11	5	6	8	12	30	50	30	30
Hilfield Park Reservoir	23	46	32	10	6	11	94	83	13	15	25	11
Tring Reservoirs	81	55	36	44	24	17	74	129	68	155	nc	20

TealTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	12	10	6	0	2	1	8	26	24	28	15	7
Batchworth Lake	0	0	0	0	0	0	0	nc	0	0	0	0
Stocker's and Bury Lakes	0	0	0	0	0	0	0	0	0	0	0	0
Maple Lodge NR	3	9	6	0	2	1	8	26	24	28	15	7
Lynsters Lake	0	0	0	nc	0	0	0	0	0	0	nc	0
Pynesfield North/South Lakes	0	0	0	0	0	0	0	0	0	0	0	0
Helicon Lake	0	1	0	0	0	0	0	0	0	0	0	0
Troy Mill Lake	9	0	0	0	0	0	0	0	0	0	0	0
Lea Valley:	84	81	53	19	4	0	0	0	36	118	83	40
Lea Valley:
East Hyde	0	0	2	0	0	0	0	0	0	0	4	8
Brocket Park	0	0	nc	0	0	0	0	0	0	nc	0	nc
Amwell GP - Ware / Thrift GP	0	nc	1	3	0	0	nc	0	0	nc	0	0
Amwell NR - others	3	8	5	8	4	0	0	0	3	4	10	0
Stanstead Abbotts Lakes - N lake	7	5	3	3	0	0	0	0	0	4	0	0
Rye Meads	52	63	31	nc	nc	nc	nc	nc	29	105	56	24
Broxbourne GP	0	0	0	0	0	0	0	0	0	0	0	0
Cheshunt GPs:	22	5	11	5	0	0	0	0	4	5	13	8
Cheshunt GPs:
Herts:	6	3	0	0	0	0	0	0	2	0	5	4
Herts:
Bowyers Water	2	nc	0	0	0	0	0	0	2	0	2	2
Cheshunt Lake	0	0	0	0	0	0	0	0	0	0	0	0
Northmet Lake	0	0	0	0	0	0	0	0	0	0	0	0
Slipe Lane Lake	1	0	0	0	0	0	0	0	0	0	2	0
Turnford Lakes	3	3	0	0	0	0	0	0	0	0	1	2
ex-Herts:	11	0	3	0	0	0	0	0	0	0	0	0
ex-Herts:
Friday Lake	2	0	0	0	0	0	0	0	0	0	0	0
Hooks Marsh GP	0	0	0	0	0	0	0	0	0	0	0	0
Met Police Pit	0	0	0	0	0	0	0	0	0	0	0	0
Seventy Acres Lake	9	0	3	0	0	0	0	0	0	0	0	0
Essex:	5	2	8	5	0	0	0	0	2	5	8	4
Essex:
Hall Marsh Scrape	2	2	8	5	0	0	0	0	0	0	0	0
Holyfield Marsh Lake	3	0	nc	nc	nc	nc	nc	nc	2	5	8	4
Radwell Mill	0	0	0	0	0	0	nc	0	0	0	0	0
Panshanger Park	71	6	4	1	0	1	nc	nc	3	74	37	24
Fairlands Valley Park	0	0	0	0	0	0	0	nc	0	0	0	0
Verulamium Park	0	0	0	0	0	0	0	0	0	0	0	0
Tyttenhanger GPs - all	nc	28	36	23	0	1	0	1	4	40	20	45
Hilfield Park Reservoir	0	0	4	0	0	0	0	0	0	1	1	0
Tring Reservoirs	248	161	42	13	0	0	4	17	245	270	nc	209

MallardTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	94	86	113	108	84	91	88	84	81	148	84	151
Batchworth Lake	10	27	10	25	23	33	13	nc	8	16	40	45
Stocker's and Bury Lakes	35	38	68	51	20	26	29	33	44	58	17	35
Maple Lodge NR	16	12	15	10	17	15	29	10	17	59	22	50
Lynsters Lake	24	0	3	nc	1	8	3	32	6	6	nc	18
Pynesfield North/South Lakes	2	1	8	5	10	5	2	0	2	0	2	0
Helicon Lake	5	4	6	9	5	1	0	1	4	6	2	0
Troy Mill Lake	2	4	3	8	8	3	12	8	0	3	1	3
Lea Valley:	514	319	228	200	131	174	234	235	287	298	428	393
Lea Valley:
East Hyde	64	12	22	18	12	22	32	36	23	15	42	24
Brocket Park	5	11	nc	12	7	19	13	15	17	nc	19	nc
Amwell GP - Ware / Thrift GP	6	nc	6	8	5	1	nc	3	0	nc	0	6
Amwell NR - others	34	4	22	16	24	18	45	35	24	27	38	65
Stanstead Abbotts Lakes - N lake	16	25	15	13	12	23	22	16	19	28	8	15
Rye Meads	106	85	42	nc	nc	nc	nc	nc	75	76	67	69
Broxbourne GP	6	8	14	15	9	26	5	11	4	11	11	12
Cheshunt GPs:	277	174	107	118	62	65	117	119	125	141	243	202
Cheshunt GPs:
Herts:	81	52	36	49	24	21	52	59	52	48	97	85
Herts:
Bowyers Water	27	nc	8	9	9	11	15	16	22	4	23	20
Cheshunt Lake	6	4	2	4	4	5	4	1	8	0	9	0
Northmet Lake	44	45	11	21	3	4	29	37	22	33	59	40
Slipe Lane Lake	2	0	3	11	4	1	0	2	0	4	3	2
Turnford Lakes	2	3	12	4	4	0	4	3	0	7	3	23
ex-Herts:	163	111	64	63	33	41	63	60	55	55	95	81
ex-Herts:
Friday Lake	0	0	6	2	0	0	0	0	0	0	4	0
Hooks Marsh GP	15	10	18	3	3	6	4	7	1	8	11	5
Met Police Pit	3	5	1	5	4	2	7	2	1	10	5	9
Seventy Acres Lake	145	96	39	53	26	33	52	51	53	37	75	67
Essex:	33	11	7	6	5	3	2	0	18	38	51	36
Essex:
Hall Marsh Scrape	1	0	7	6	5	3	2	0	1	10	13	2
Holyfield Marsh Lake	32	11	nc	nc	nc	nc	nc	nc	17	28	38	34
Radwell Mill	51	24	14	11	13	18	nc	49	25	47	81	39
Panshanger Park	53	0	20	27	31	51	nc	nc	13	25	38	27
Fairlands Valley Park	177	125	96	76	60	97	143	nc	149	131	116	137
Verulamium Park	0	1	16	4	17	13	14	22	18	17	17	10
Tyttenhanger GPs - all	nc	10	14	5	45	21	31	16	12	30	71	70
Hilfield Park Reservoir	3	3	8	18	22	14	4	2	10	25	5	0
Tring Reservoirs	183	107	97	95	103	95	151	277	209	111	nc	65

ShovelerTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	39	167	96	4	4	4	3	2	0	23	19	93
Batchworth Lake	0	0	0	0	0	0	0	nc	0	0	0	0
Stocker's and Bury Lakes	21	159	82	0	0	0	0	2	0	12	14	85
Maple Lodge NR	0	8	14	4	4	4	3	0	0	1	1	2
Lynsters Lake	0	0	0	nc	0	0	0	0	0	0	nc	0
Pynesfield North/South Lakes	1	0	0	0	0	0	0	0	0	0	0	6
Helicon Lake	0	0	0	0	0	0	0	0	0	0	0	0
Troy Mill Lake	17	0	0	0	0	0	0	0	0	10	4	0
Lea Valley:	303	296	172	4	3	1	0	3	89	238	225	184
Lea Valley:
East Hyde	0	0	0	0	0	0	0	0	0	0	0	0
Brocket Park	0	0	nc	0	0	0	0	0	0	nc	0	nc
Amwell GP - Ware / Thrift GP	3	nc	0	0	0	0	nc	0	1	nc	1	1
Amwell NR - others	55	130	19	1	1	1	0	1	0	37	11	12
Stanstead Abbotts Lakes - N lake	9	8	2	0	0	0	0	1	0	10	6	18
Rye Meads	85	50	138	nc	nc	nc	nc	nc	62	112	42	39
Broxbourne GP	0	0	0	0	0	0	0	0	0	0	2	0
Cheshunt GPs:	151	108	13	3	2	0	0	1	26	79	163	114
Cheshunt GPs:
Herts:	73	20	1	0	0	0	0	1	0	2	35	24
Herts:
Bowyers Water	23	nc	0	0	0	0	0	1	0	2	8	17
Cheshunt Lake	0	0	0	0	0	0	0	0	0	0	0	0
Northmet Lake	36	10	1	0	0	0	0	0	0	0	24	4
Slipe Lane Lake	0	5	0	0	0	0	0	0	0	0	3	1
Turnford Lakes	14	5	0	0	0	0	0	0	0	0	0	2
ex-Herts:	62	45	12	3	2	0	0	0	17	56	122	87
ex-Herts:
Friday Lake	0	2	0	0	0	0	0	0	5	0	7	0
Hooks Marsh GP	27	11	8	2	0	0	0	0	4	18	60	69
Met Police Pit	11	2	0	1	0	0	0	0	4	20	49	11
Seventy Acres Lake	24	30	4	0	2	0	0	0	4	18	6	7
Essex:	16	43	0	0	0	0	0	0	9	21	6	3
Essex:
Hall Marsh Scrape	0	41	0	0	0	0	0	0	0	4	0	2
Holyfield Marsh Lake	16	2	nc	nc	nc	nc	nc	nc	9	17	6	1
Radwell Mill	3	1	0	0	0	0	nc	0	0	3	4	1
Panshanger Park	8	0	0	0	0	0	nc	nc	1	33	12	12
Fairlands Valley Park	0	0	0	0	0	0	0	nc	0	0	0	0
Verulamium Park	11	4	0	0	0	0	0	0	0	0	3	10
Tyttenhanger GPs - all	nc	24	30	5	0	3	0	2	8	40	15	26
Hilfield Park Reservoir	30	40	37	0	0	0	0	0	30	23	17	29
Tring Reservoirs	55	60	43	5	2	1	1	20	131	176	nc	57

PochardTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	100	62	38	17	30	16	4	9	41	47	58	93
Batchworth Lake	4	7	0	0	0	0	0	nc	0	0	8	4
Stocker's and Bury Lakes	71	24	15	14	23	8	2	9	39	41	42	70
Maple Lodge NR	0	2	3	3	4	3	0	0	0	0	0	3
Lynsters Lake	0	0	0	nc	0	0	0	0	2	3	nc	0
Pynesfield North/South Lakes	10	7	0	0	0	0	1	0	0	0	3	11
Helicon Lake	0	0	0	0	0	0	0	0	0	0	0	0
Troy Mill Lake	15	22	20	0	3	5	1	0	0	3	5	5
Lea Valley:	185	105	96	60	28	23	25	49	66	208	265	265
Lea Valley:
East Hyde	0	0	0	0	0	0	0	0	0	0	0	0
Brocket Park	0	0	nc	0	0	0	0	0	0	nc	0	nc
Amwell GP - Ware / Thrift GP	26	nc	22	7	4	5	nc	0	3	nc	9	7
Amwell NR - others	30	21	23	24	6	3	15	29	32	158	149	115
Stanstead Abbotts Lakes - N lake	15	20	21	22	8	4	0	9	12	35	51	82
Rye Meads	1	17	15	nc	nc	nc	nc	nc	1	0	1	2
Broxbourne GP	36	20	1	3	0	0	0	0	0	4	0	0
Cheshunt GPs:	77	27	14	4	10	11	10	11	18	11	55	59
Cheshunt GPs:
Herts:	30	0	1	0	1	0	0	0	0	0	25	18
Herts:
Bowyers Water	21	nc	0	0	1	0	0	0	0	0	21	11
Cheshunt Lake	6	0	0	0	0	0	0	0	0	0	2	1
Northmet Lake	3	0	1	0	0	0	0	0	0	0	2	6
Slipe Lane Lake	0	0	0	0	0	0	0	0	0	0	0	0
Turnford Lakes	0	0	0	0	0	0	0	0	0	0	0	0
ex-Herts:	26	11	13	4	9	11	10	11	8	0	6	25
ex-Herts:
Friday Lake	0	0	0	0	0	0	0	0	0	0	1	0
Hooks Marsh GP	0	1	1	0	0	0	0	0	0	0	0	7
Met Police Pit	0	0	0	0	0	0	0	0	0	0	0	6
Seventy Acres Lake	26	10	12	4	9	11	10	11	8	0	5	12
Essex:	21	16	0	0	0	0	0	0	10	11	24	16
Essex:
Hall Marsh Scrape	0	0	0	0	0	0	0	0	0	0	0	0
Holyfield Marsh Lake	21	16	nc	nc	nc	nc	nc	nc	10	11	24	16
Radwell Mill	0	0	0	0	0	0	nc	0	0	0	0	0
Panshanger Park	12	5	0	1	2	5	nc	nc	4	4	11	10
Fairlands Valley Park	0	0	0	0	0	0	0	nc	0	0	0	0
Verulamium Park	3	0	2	1	2	0	0	0	0	2	0	0
Tyttenhanger GPs - all	nc	2	1	0	0	0	2	0	4	5	3	3
Hilfield Park Reservoir	39	5	1	1	2	20	162	181	21	11	32	26
Tring Reservoirs	92	78	35	1	4	5	9	22	81	178	nc	111

Tufted DuckTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	219	282	196	95	57	106	65	45	57	171	208	266
Batchworth Lake	24	25	12	3	4	3	8	nc	0	10	21	54
Stocker's and Bury Lakes	80	143	70	51	28	47	33	40	36	54	90	75
Maple Lodge NR	0	13	7	2	7	5	4	0	0	1	2	8
Lynsters Lake	33	16	12	nc	2	6	1	3	10	54	nc	71
Pynesfield North/South Lakes	32	30	34	7	4	11	4	0	9	9	22	22
Helicon Lake	10	15	5	8	8	3	12	0	0	2	30	8
Troy Mill Lake	40	40	56	24	4	31	3	2	2	41	43	28
Lea Valley:	672	498	543	341	189	144	263	380	325	599	647	849
Lea Valley:
East Hyde	0	0	0	0	0	0	1	0	0	0	0	0
Brocket Park	51	14	nc	10	14	8	17	2	0	nc	0	nc
Amwell GP - Ware / Thrift GP	95	nc	83	38	35	20	nc	22	21	nc	37	37
Amwell NR - others	106	144	106	107	55	39	78	71	42	55	146	126
Stanstead Abbotts Lakes - N lake	96	59	75	58	35	31	61	36	86	43	80	106
Rye Meads	19	33	62	nc	nc	nc	nc	nc	18	5	37	17
Broxbourne GP	49	60	65	28	17	7	86	204	67	402	63	307
Cheshunt GPs:	256	188	152	100	33	39	20	45	91	94	284	256
Cheshunt GPs:
Herts:	120	66	58	23	18	10	5	3	18	20	80	85
Herts:
Bowyers Water	31	nc	31	9	10	1	0	1	9	11	36	28
Cheshunt Lake	2	3	5	0	0	0	0	0	0	0	1	8
Northmet Lake	11	22	14	13	2	1	5	2	4	8	25	27
Slipe Lane Lake	14	11	2	1	0	4	0	0	0	1	13	16
Turnford Lakes	62	30	6	0	6	4	0	0	5	0	5	6
ex-Herts:	55	74	94	71	15	29	15	42	35	18	65	35
ex-Herts:
Friday Lake	7	12	26	12	0	0	0	1	8	0	15	3
Hooks Marsh GP	7	15	6	16	2	8	9	18	5	4	15	14
Met Police Pit	0	9	20	25	2	0	0	0	0	2	10	0
Seventy Acres Lake	41	38	42	18	11	21	6	23	22	12	25	18
Essex:	81	48	0	6	0	0	0	0	38	56	139	136
Essex:
Hall Marsh Scrape	5	0	0	6	0	0	0	0	0	0	3	0
Holyfield Marsh Lake	76	48	nc	nc	nc	nc	nc	nc	38	56	136	136
Radwell Mill	0	0	4	3	0	2	nc	2	0	0	0	0
Panshanger Park	60	55	44	0	21	31	nc	nc	49	65	56	58
Fairlands Valley Park	1	0	0	1	0	0	1	nc	0	1	1	0
Verulamium Park	1	0	2	0	3	11	0	0	0	1	0	1
Tyttenhanger GPs - all	nc	25	40	25	24	12	9	14	20	35	46	40
Hilfield Park Reservoir	126	149	145	56	7	22	149	157	121	70	152	102
Tring Reservoirs	222	210	225	241	62	69	110	251	164	251	nc	247

GoldeneyeTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	5	13	7	0	2	0	0	1	0	1	8	12
Batchworth Lake	0	0	0	0	0	0	0	nc	0	0	0	0
Stocker's and Bury Lakes	4	9	4	0	0	0	0	0	0	1	6	10
Maple Lodge NR	0	0	0	0	0	0	0	0	0	0	0	0
Lynsters Lake	0	0	0	nc	0	0	0	0	0	0	nc	0
Pynesfield North/South Lakes	0	0	0	0	0	0	0	0	0	0	0	0
Helicon Lake	0	0	0	0	0	0	0	0	0	0	1	0
Troy Mill Lake	1	4	3	0	2	0	0	1	0	0	1	2
Lea Valley:	8	5	3	0	0	0	0	0	0	0	6	4
Lea Valley:
East Hyde	0	0	0	0	0	0	0	0	0	0	0	0
Brocket Park	0	0	nc	0	0	0	0	0	0	nc	0	nc
Amwell GP - Ware / Thrift GP	0	nc	0	0	0	0	nc	0	0	nc	0	0
Amwell NR - others	6	0	3	0	0	0	0	0	0	0	6	4
Stanstead Abbotts Lakes - N lake	0	2	0	0	0	0	0	0	0	0	0	0
Rye Meads	0	0	0	nc	nc	nc	nc	nc	0	0	0	0
Broxbourne GP	0	0	0	0	0	0	0	0	0	0	0	0
Cheshunt GPs:	2	3	0	0	0	0	0	0	0	0	0	0
Cheshunt GPs:
Herts:	0	1	0	0	0	0	0	0	0	0	0	0
Herts:
Bowyers Water	0	nc	0	0	0	0	0	0	0	0	0	0
Cheshunt Lake	0	0	0	0	0	0	0	0	0	0	0	0
Northmet Lake	0	1	0	0	0	0	0	0	0	0	0	0
Slipe Lane Lake	0	0	0	0	0	0	0	0	0	0	0	0
Turnford Lakes	0	0	0	0	0	0	0	0	0	0	0	0
ex-Herts:	0	0	0	0	0	0	0	0	0	0	0	0
ex-Herts:
Friday Lake	0	0	0	0	0	0	0	0	0	0	0	0
Hooks Marsh GP	0	0	0	0	0	0	0	0	0	0	0	0
Met Police Pit	0	0	0	0	0	0	0	0	0	0	0	0
Seventy Acres Lake	0	0	0	0	0	0	0	0	0	0	0	0
Essex:	2	2	0	0	0	0	0	0	0	0	0	0
Essex:
Hall Marsh Scrape	0	0	0	0	0	0	0	0	0	0	0	0
Holyfield Marsh Lake	2	2	nc	nc	nc	nc	nc	nc	0	0	0	0
Radwell Mill	0	0	0	0	0	0	nc	0	0	0	0	0
Panshanger Park	0	0	0	0	0	0	nc	nc	0	0	0	0
Fairlands Valley Park	0	0	0	0	0	0	0	nc	0	0	0	0
Verulamium Park	0	0	0	0	0	0	0	0	0	0	0	0
Tyttenhanger GPs - all	nc	0	0	0	0	0	0	0	0	0	1	1
Hilfield Park Reservoir	1	1	1	0	0	0	0	0	0	0	1	0
Tring Reservoirs	15	4	0	0	0	0	0	0	0	1	nc	8

Ruddy DuckTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	0	0	0	0	0	0	0	0	0	0	0	0
Batchworth Lake	0	0	0	0	0	0	0	nc	0	0	0	0
Stocker's and Bury Lakes	0	0	0	0	0	0	0	0	0	0	0	0
Maple Lodge NR	0	0	0	0	0	0	0	0	0	0	0	0
Lynsters Lake	0	0	0	nc	0	0	0	0	0	0	nc	0
Pynesfield North/South Lakes	0	0	0	0	0	0	0	0	0	0	0	0
Helicon Lake	0	0	0	0	0	0	0	0	0	0	0	0
Troy Mill Lake	0	0	0	0	0	0	0	0	0	0	0	0
Lea Valley:	0	0	0	0	0	0	0	0	0	0	0	0
Lea Valley:
East Hyde	0	0	0	0	0	0	0	0	0	0	0	0
Brocket Park	0	0	nc	0	0	0	0	0	0	nc	0	nc
Amwell GP - Ware / Thrift GP	0	nc	0	0	0	0	nc	0	0	nc	0	0
Amwell NR - others	0	0	0	0	0	0	0	0	0	0	0	0
Stanstead Abbotts Lakes - N lake	0	0	0	0	0	0	0	0	0	0	0	0
Rye Meads	0	0	0	nc	nc	nc	nc	nc	0	0	0	0
Broxbourne GP	0	0	0	0	0	0	0	0	0	0	0	0
Cheshunt GPs:	0	0	0	0	0	0	0	0	0	0	0	0
Cheshunt GPs:
Herts:	0	0	0	0	0	0	0	0	0	0	0	0
Herts:
Bowyers Water	0	nc	0	0	0	0	0	0	0	0	0	0
Cheshunt Lake	0	0	0	0	0	0	0	0	0	0	0	0
Northmet Lake	0	0	0	0	0	0	0	0	0	0	0	0
Slipe Lane Lake	0	0	0	0	0	0	0	0	0	0	0	0
Turnford Lakes	0	0	0	0	0	0	0	0	0	0	0	0
ex-Herts:	0	0	0	0	0	0	0	0	0	0	0	0
ex-Herts:
Friday Lake	0	0	0	0	0	0	0	0	0	0	0	0
Hooks Marsh GP	0	0	0	0	0	0	0	0	0	0	0	0
Met Police Pit	0	0	0	0	0	0	0	0	0	0	0	0
Seventy Acres Lake	0	0	0	0	0	0	0	0	0	0	0	0
Essex:	0	0	0	0	0	0	0	0	0	0	0	0
Essex:
Hall Marsh Scrape	0	0	0	0	0	0	0	0	0	0	0	0
Holyfield Marsh Lake	0	0	nc	nc	nc	nc	nc	nc	0	0	0	0
Radwell Mill	0	0	0	0	0	0	nc	0	0	0	0	0
Panshanger Park	0	0	0	0	0	0	nc	nc	0	0	0	0
Fairlands Valley Park	0	0	0	0	0	0	0	nc	0	0	0	0
Verulamium Park	0	0	0	0	0	0	0	0	0	0	0	0
Tyttenhanger GPs - all	nc	0	0	0	0	0	0	0	0	0	0	0
Hilfield Park Reservoir	0	0	0	0	0	0	0	0	0	0	0	0
Tring Reservoirs	0	0	0	0	0	0	0	0	0	0	nc	0

Little GrebeTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	1	4	8	6	4	5	5	5	4	5	4	6
Batchworth Lake	0	0	0	0	0	0	0	nc	0	0	0	0
Stocker's and Bury Lakes	0	0	0	0	0	0	0	0	0	0	0	0
Maple Lodge NR	1	4	8	6	4	5	5	5	4	5	4	5
Lynsters Lake	0	0	0	nc	0	0	0	0	0	0	nc	1
Pynesfield North/South Lakes	0	0	0	0	0	0	0	0	0	0	0	0
Helicon Lake	0	0	0	0	0	0	0	0	0	0	0	0
Troy Mill Lake	0	0	0	0	0	0	0	0	0	0	0	0
Lea Valley:	25	7	4	4	2	3	3	2	35	31	23	23
Lea Valley:
East Hyde	2	1	2	2	2	2	2	0	1	3	1	2
Brocket Park	3	2	nc	0	0	1	0	2	0	nc	0	nc
Amwell GP - Ware / Thrift GP	0	nc	0	0	0	0	nc	0	0	nc	0	1
Amwell NR - others	0	0	0	0	0	0	0	0	0	1	1	2
Stanstead Abbotts Lakes - N lake	3	0	1	0	0	0	1	0	0	0	3	2
Rye Meads	2	2	0	nc	nc	nc	nc	nc	30	22	8	4
Broxbourne GP	1	0	0	0	0	0	0	0	0	0	3	2
Cheshunt GPs:	14	2	1	2	0	0	0	0	4	5	7	10
Cheshunt GPs:
Herts:	0	1	0	0	0	0	0	0	0	1	0	1
Herts:
Bowyers Water	0	nc	0	0	0	0	0	0	0	1	0	0
Cheshunt Lake	0	0	0	0	0	0	0	0	0	0	0	0
Northmet Lake	0	0	0	0	0	0	0	0	0	0	0	1
Slipe Lane Lake	0	1	0	0	0	0	0	0	0	0	0	0
Turnford Lakes	0	0	0	0	0	0	0	0	0	0	0	0
ex-Herts:	10	1	0	0	0	0	0	0	2	0	1	2
ex-Herts:
Friday Lake	0	0	0	0	0	0	0	0	0	0	0	0
Hooks Marsh GP	0	1	0	0	0	0	0	0	0	0	0	0
Met Police Pit	0	0	0	0	0	0	0	0	0	0	0	0
Seventy Acres Lake	10	0	0	0	0	0	0	0	2	0	1	2
Essex:	4	0	1	2	0	0	0	0	2	4	6	7
Essex:
Hall Marsh Scrape	0	0	1	2	0	0	0	0	0	0	0	2
Holyfield Marsh Lake	4	0	nc	nc	nc	nc	nc	nc	2	4	6	5
Radwell Mill	0	2	0	0	0	0	nc	0	0	0	0	0
Panshanger Park	24	32	19	14	15	12	nc	nc	44	31	30	27
Fairlands Valley Park	0	0	0	0	0	0	0	nc	0	0	0	0
Verulamium Park	0	0	2	0	0	0	0	6	3	0	0	0
Tyttenhanger GPs - all	nc	0	0	0	0	0	1	0	2	1	1	0
Hilfield Park Reservoir	6	5	7	3	4	3	7	5	10	5	7	5
Tring Reservoirs	11	3	1	2	3	2	3	8	17	23	nc	14

Great Crested GrebeTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	27	46	37	29	36	29	33	38	42	46	39	44
Batchworth Lake	10	13	18	8	12	7	7	nc	7	4	13	15
Stocker's and Bury Lakes	8	12	10	10	10	8	17	24	20	22	18	12
Maple Lodge NR	0	2	0	1	2	2	0	0	0	0	0	0
Lynsters Lake	1	7	3	nc	4	4	3	3	3	6	nc	7
Pynesfield North/South Lakes	5	6	4	3	4	3	3	1	4	3	5	6
Helicon Lake	1	0	0	0	0	1	0	5	6	8	3	3
Troy Mill Lake	2	6	2	7	4	4	3	5	2	3	0	1
Lea Valley:	95	66	54	52	53	58	60	92	93	92	65	69
Lea Valley:
East Hyde	0	0	0	0	0	0	0	0	0	0	0	0
Brocket Park	2	0	nc	1	0	1	1	2	4	nc	0	nc
Amwell GP - Ware / Thrift GP	7	nc	2	3	4	5	nc	4	10	nc	3	2
Amwell NR - others	18	9	7	3	4	5	4	5	6	6	5	5
Stanstead Abbotts Lakes - N lake	3	4	8	6	5	9	15	6	11	9	4	2
Rye Meads	0	1	0	nc	nc	nc	nc	nc	4	9	4	0
Broxbourne GP	8	10	12	14	16	17	10	16	12	13	8	7
Cheshunt GPs:	57	42	25	25	24	21	30	59	46	55	41	53
Cheshunt GPs:
Herts:	8	8	9	9	12	13	15	30	15	17	22	14
Herts:
Bowyers Water	4	nc	7	4	6	5	7	10	6	5	5	4
Cheshunt Lake	0	1	0	0	0	1	1	2	0	0	2	1
Northmet Lake	4	5	0	5	6	5	4	17	6	8	11	5
Slipe Lane Lake	0	2	1	0	0	2	1	1	1	2	1	2
Turnford Lakes	0	0	1	0	0	0	2	0	2	2	3	2
ex-Herts:	28	17	16	16	12	8	15	29	19	19	18	21
ex-Herts:
Friday Lake	2	4	1	2	1	1	2	3	4	2	2	0
Hooks Marsh GP	7	3	4	4	5	0	6	14	4	5	6	8
Met Police Pit	0	0	0	1	0	0	2	0	0	2	3	2
Seventy Acres Lake	19	10	11	9	6	7	5	12	11	10	7	11
Essex:	21	17	0	0	0	0	0	0	12	19	1	18
Essex:
Hall Marsh Scrape	0	0	0	0	0	0	0	0	0	0	1	0
Holyfield Marsh Lake	21	17	nc	nc	nc	nc	nc	nc	12	19	0	18
Radwell Mill	0	0	0	0	0	0	nc	0	0	0	0	0
Panshanger Park	0	2	1	1	2	6	nc	nc	11	3	0	0
Fairlands Valley Park	2	1	3	7	3	1	6	nc	2	2	1	3
Verulamium Park	0	0	0	0	0	0	0	0	0	0	0	0
Tyttenhanger GPs - all	nc	19	24	15	4	3	2	2	3	4	16	24
Hilfield Park Reservoir	2	6	15	7	18	24	34	48	65	35	37	5
Tring Reservoirs	12	16	26	24	20	23	15	27	39	37	nc	22

CormorantTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	50	39	25	12	22	16	10	13	34	72	30	35
Batchworth Lake	7	3	1	0	0	2	0	nc	0	0	5	2
Stocker's and Bury Lakes	28	22	19	7	13	11	7	7	15	54	19	21
Maple Lodge NR	0	0	1	1	2	1	0	0	0	4	0	0
Lynsters Lake	0	1	0	nc	1	1	0	0	3	0	nc	2
Pynesfield North/South Lakes	8	2	1	1	3	0	0	0	0	3	0	4
Helicon Lake	6	0	0	1	0	0	1	2	0	1	1	0
Troy Mill Lake	1	11	3	2	3	1	2	4	16	10	5	6
Lea Valley:	119	137	83	112	78	69	36	36	145	103	221	181
Lea Valley:
East Hyde	1	2	2	2	0	6	5	2	5	2	5	3
Brocket Park	2	3	nc	3	2	4	2	4	9	nc	0	nc
Amwell GP - Ware / Thrift GP	6	nc	0	3	0	1	nc	0	3	nc	0	3
Amwell NR - others	30	55	45	77	60	39	9	9	20	32	30	18
Stanstead Abbotts Lakes - N lake	9	6	5	5	4	3	2	5	5	6	7	12
Rye Meads	5	2	0	nc	nc	nc	nc	nc	16	10	13	6
Broxbourne GP	12	11	7	4	5	7	3	2	9	9	9	10
Cheshunt GPs:	54	58	24	18	7	9	15	14	78	44	157	129
Cheshunt GPs:
Herts:	15	9	8	6	3	4	9	5	6	4	53	23
Herts:
Bowyers Water	5	nc	2	0	0	0	0	2	2	3	7	4
Cheshunt Lake	2	1	3	1	0	1	1	0	0	0	4	3
Northmet Lake	3	2	2	3	1	1	5	2	0	0	42	8
Slipe Lane Lake	3	6	0	1	2	2	3	0	2	1	0	3
Turnford Lakes	2	0	1	1	0	0	0	1	2	0	0	5
ex-Herts:	26	25	16	10	4	4	6	8	33	12	52	61
ex-Herts:
Friday Lake	1	0	1	0	0	1	0	0	0	0	0	1
Hooks Marsh GP	11	14	7	9	1	0	1	0	5	8	31	25
Met Police Pit	5	2	0	0	0	0	2	1	3	4	3	4
Seventy Acres Lake	9	9	8	1	3	3	3	7	25	0	18	31
Essex:	13	24	0	2	0	1	0	1	39	28	52	45
Essex:
Hall Marsh Scrape	0	0	0	2	0	1	0	1	1	1	0	0
Holyfield Marsh Lake	13	24	nc	nc	nc	nc	nc	nc	38	27	52	45
Radwell Mill	0	2	0	0	1	0	nc	0	1	0	0	2
Panshanger Park	5	6	3	8	2	3	nc	nc	9	4	10	11
Fairlands Valley Park	7	2	2	2	1	1	2	nc	2	10	4	8
Verulamium Park	0	0	0	0	0	0	0	0	0	2	0	0
Tyttenhanger GPs - all	nc	23	15	4	1	0	0	1	0	8	25	50
Hilfield Park Reservoir	6	5	3	0	0	0	4	1	10	49	25	6
Tring Reservoirs	36	47	27	25	18	22	4	31	37	54	nc	48

Grey HeronTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	17	22	26	18	8	9	6	14	10	11	13	17
Batchworth Lake	2	0	1	1	1	0	0	nc	1	2	1	2
Stocker's and Bury Lakes	8	17	24	12	7	5	2	10	5	3	8	6
Maple Lodge NR	2	3	1	1	0	1	1	2	2	0	0	1
Lynsters Lake	2	1	0	nc	0	0	0	0	0	1	nc	4
Pynesfield North/South Lakes	2	0	0	1	0	0	1	1	0	1	1	1
Helicon Lake	0	0	0	0	0	0	0	1	0	0	0	1
Troy Mill Lake	1	1	0	3	0	3	2	0	2	4	3	2
Lea Valley:	36	39	37	31	24	14	16	20	28	21	30	26
Lea Valley:
East Hyde	2	1	2	2	0	1	2	1	2	1	1	2
Brocket Park	0	0	nc	2	0	0	1	0	0	nc	0	nc
Amwell GP - Ware / Thrift GP	4	nc	1	2	0	1	nc	0	1	nc	0	0
Amwell NR - others	11	17	27	15	15	8	5	8	5	1	3	4
Stanstead Abbotts Lakes - N lake	1	3	0	1	1	2	1	1	2	1	2	1
Rye Meads	4	5	0	nc	nc	nc	nc	nc	7	3	4	3
Broxbourne GP	4	0	0	2	0	0	0	1	0	0	0	0
Cheshunt GPs:	10	13	7	7	8	2	7	9	11	15	20	16
Cheshunt GPs:
Herts:	1	1	1	0	0	0	2	3	1	1	3	2
Herts:
Bowyers Water	0	nc	0	0	0	0	1	1	1	0	1	1
Cheshunt Lake	0	0	0	0	0	0	0	0	0	1	0	0
Northmet Lake	1	0	0	0	0	0	0	0	0	0	1	1
Slipe Lane Lake	0	0	0	0	0	0	1	0	0	0	1	0
Turnford Lakes	0	1	1	0	0	0	0	2	0	0	0	0
ex-Herts:	5	9	5	5	5	2	5	6	5	10	10	10
ex-Herts:
Friday Lake	0	1	2	0	0	1	0	0	0	1	0	2
Hooks Marsh GP	0	6	2	4	3	0	0	2	1	1	3	3
Met Police Pit	0	1	0	1	0	1	2	1	3	2	4	2
Seventy Acres Lake	5	1	1	0	2	0	3	3	1	6	3	3
Essex:	4	3	1	2	3	0	0	0	5	4	7	4
Essex:
Hall Marsh Scrape	1	1	1	2	3	0	0	0	0	0	1	1
Holyfield Marsh Lake	3	2	nc	nc	nc	nc	nc	nc	5	4	6	3
Radwell Mill	2	1	0	0	0	2	nc	0	1	2	1	1
Panshanger Park	2	1	2	1	0	2	nc	nc	0	1	3	1
Fairlands Valley Park	1	0	0	0	0	0	0	nc	0	0	2	0
Verulamium Park	0	4	1	4	2	3	2	2	2	2	0	1
Tyttenhanger GPs - all	nc	9	9	11	9	6	4	6	4	8	6	7
Hilfield Park Reservoir	0	1	1	0	0	0	0	0	0	0	3	0
Tring Reservoirs	13	12	14	12	11	6	8	12	9	8	nc	5

MoorhenTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	43	36	43	21	14	16	14	15	42	23	34	37
Batchworth Lake	9	6	10	7	4	3	2	nc	7	5	6	11
Stocker's and Bury Lakes	24	16	22	4	2	3	2	7	13	5	16	13
Maple Lodge NR	3	6	0	7	6	7	4	5	12	5	4	3
Lynsters Lake	2	1	1	nc	0	0	1	0	0	1	nc	5
Pynesfield North/South Lakes	3	0	1	0	0	2	0	0	4	0	2	0
Helicon Lake	1	4	5	2	2	1	3	1	5	2	2	2
Troy Mill Lake	1	3	4	1	0	0	2	2	1	5	4	3
Lea Valley:	174	130	95	72	55	43	51	69	186	141	160	126
Lea Valley:
East Hyde	52	29	27	25	18	14	22	21	22	26	39	41
Brocket Park	19	12	nc	6	7	3	8	2	5	nc	14	nc
Amwell GP - Ware / Thrift GP	3	nc	4	5	2	1	nc	2	2	nc	1	0
Amwell NR - others	6	13	10	8	10	6	7	14	16	13	20	15
Stanstead Abbotts Lakes - N lake	8	8	3	11	5	8	3	8	10	8	6	6
Rye Meads	49	34	31	nc	nc	nc	nc	nc	74	60	39	24
Broxbourne GP	1	4	6	5	8	2	2	5	5	8	8	7
Cheshunt GPs:	36	30	14	12	5	9	9	17	52	26	33	33
Cheshunt GPs:
Herts:	13	14	5	5	1	4	2	13	38	18	21	15
Herts:
Bowyers Water	9	nc	1	4	1	4	2	8	30	9	11	8
Cheshunt Lake	2	3	0	0	0	0	0	0	1	4	4	0
Northmet Lake	2	8	2	0	0	0	0	2	6	2	3	1
Slipe Lane Lake	0	2	2	1	0	0	0	2	1	1	0	6
Turnford Lakes	0	1	0	0	0	0	0	1	0	2	3	0
ex-Herts:	23	16	8	7	3	5	7	4	14	8	12	16
ex-Herts:
Friday Lake	0	0	1	0	0	1	1	0	1	1	0	1
Hooks Marsh GP	11	9	3	2	0	0	1	0	5	4	4	7
Met Police Pit	0	0	0	0	0	0	0	0	0	0	1	1
Seventy Acres Lake	12	7	4	5	3	4	5	4	8	3	7	7
Essex:	0	0	1	0	1	0	0	0	0	0	0	2
Essex:
Hall Marsh Scrape	0	0	1	0	1	0	0	0	0	0	0	1
Holyfield Marsh Lake	0	0	nc	nc	nc	nc	nc	nc	0	0	0	1
Radwell Mill	4	5	3	2	0	1	nc	4	3	0	4	2
Panshanger Park	7	10	6	2	4	2	nc	nc	22	12	11	14
Fairlands Valley Park	28	30	24	25	20	19	17	nc	43	39	46	39
Verulamium Park	9	12	7	5	4	4	9	11	17	12	13	13
Tyttenhanger GPs - all	nc	23	17	8	11	5	14	11	20	23	25	20
Hilfield Park Reservoir	1	5	2	0	0	2	7	8	7	4	6	3
Tring Reservoirs	43	29	31	18	8	9	12	37	81	94	nc	40

CootTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	877	489	304	231	261	217	227	451	554	782	660	857
Batchworth Lake	18	39	30	22	21	34	48	nc	85	109	137	116
Stocker's and Bury Lakes	460	193	68	85	83	18	38	235	337	445	454	479
Maple Lodge NR	2	19	0	20	36	22	23	6	3	3	6	9
Lynsters Lake	177	59	49	nc	32	43	21	113	28	143	nc	182
Pynesfield North/South Lakes	142	117	115	38	39	25	33	48	50	48	39	38
Helicon Lake	68	52	40	15	15	17	26	18	26	19	21	26
Troy Mill Lake	10	10	2	51	35	58	38	31	25	15	3	7
Lea Valley:	1719	1183	800	511	412	512	615	824	1768	2053	2347	2048
Lea Valley:
East Hyde	18	20	22	16	12	16	8	12	14	11	10	10
Brocket Park	107	64	nc	36	29	37	40	49	31	nc	76	nc
Amwell GP - Ware / Thrift GP	9	nc	13	23	16	18	nc	18	5	nc	7	12
Amwell NR - others	322	172	114	78	69	88	191	213	368	429	455	419
Stanstead Abbotts Lakes - N lake	125	105	63	52	33	55	32	52	93	154	147	166
Rye Meads	79	134	133	nc	nc	nc	nc	nc	491	383	272	186
Broxbourne GP	129	150	113	73	78	72	65	87	111	172	181	209
Cheshunt GPs:	930	538	342	233	175	226	279	393	655	904	1199	1046
Cheshunt GPs:
Herts:	541	228	252	152	122	154	211	291	327	501	542	493
Herts:
Bowyers Water	318	nc	123	75	57	99	148	204	241	346	382	354
Cheshunt Lake	11	12	5	5	0	1	0	0	1	1	7	3
Northmet Lake	43	70	26	32	18	24	27	48	25	66	43	28
Slipe Lane Lake	82	60	39	23	37	22	23	31	42	75	69	43
Turnford Lakes	87	86	59	17	10	8	13	8	18	13	41	65
ex-Herts:	115	93	85	75	48	71	66	99	166	80	192	159
ex-Herts:
Friday Lake	17	11	9	18	6	4	6	8	22	6	3	5
Hooks Marsh GP	19	26	29	21	6	19	7	22	9	22	38	29
Met Police Pit	2	7	5	2	4	4	3	0	1	5	3	5
Seventy Acres Lake	77	49	42	34	32	44	50	69	134	47	148	120
Essex:	274	217	5	6	5	1	2	3	162	323	465	394
Essex:
Hall Marsh Scrape	9	7	5	6	5	1	2	3	0	3	9	4
Holyfield Marsh Lake	265	210	nc	nc	nc	nc	nc	nc	162	320	456	390
Radwell Mill	1	3	4	3	2	4	nc	4	1	0	0	0
Panshanger Park	167	117	90	66	68	71	nc	nc	183	142	195	192
Fairlands Valley Park	35	34	26	33	27	24	15	nc	33	29	26	32
Verulamium Park	24	22	20	15	16	20	25	15	14	24	20	17
Tyttenhanger GPs - all	nc	64	62	22	32	58	73	95	70	120	75	50
Hilfield Park Reservoir	43	55	83	73	70	103	237	199	165	119	102	91
Tring Reservoirs	322	184	148	118	144	272	501	654	597	990	nc	458